Changes to Send a signed transaction signableHash.

added the optional property error/code to the response with the 401 status

added the optional property error/code to the response with the 409 status

added the optional property error/param to the response with the 401 status

added the optional property error/param to the response with the 409 status

removed ZKSyncDetails from the details response property anyOf list for the response status 200

removed the zkSync enum value from the abstractionType response property for the response status 200

the response/error response's property type changed from no type to object for status 200

the security scope transactions:write was added to the endpoint's security scheme sk

added the optional property finalCost to the response with the 200 status

added the optional property response/error/explanation to the response with the 200 status

added the optional property response/error/name to the response with the 200 status

added the required property response/error/reason to the response with the 200 status

the endpoint scheme security pk_identity_token was removed from the API