{
  "manageEntity": {
    "action": "Save",
    "entityId": "1856286480",
    "entityType": "Track",
    "nonce": "0x9dc7aed8f6783999f167c54aba1a6321eb2c48947f91f3b55f34fd261918bb80",
    "signature": "0x171bfe7968cdfcec780d2f7ce54446f91fa606543de375ee6032830bfc13dfa800e88968fa27f4948bcf5f9f26790e17aece4cc4451b2d1b0aa6afd2f751d1751c",
    "signer": "0x06F989586c5477333A41f6057f224Df79903862a",
    "userId": "24240642"
  }
}