{
  "manageEntity": {
    "action": "Save",
    "entityId": "250182",
    "entityType": "Track",
    "nonce": "0x582bbce699ba1ba55ac5c96f02bb14558c589c3f8011b5faa818872ef6edcbfd",
    "signature": "0x2d4765679a6d4cc1ba19afa98fc1859f8b693d3d2439aad9bde093e8403228312b8a94904eaffbee3df296d4857876f93419abde51af29c3f995f23d37f7eb751c",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}