{
  "manageEntity": {
    "action": "Save",
    "entityId": "1981093604",
    "entityType": "Track",
    "nonce": "0x6865fa28c6b76e623237310a9fed780e8cee37d5bced33ace308eb77395208e6",
    "signature": "0xa6afb59a75f8ec8993b7d7074bbe7962c7d83ebbb175bca39c2d3a7743580db964b3acaad1d8f1173c5db933fde9f1f49e44f2692f9c7ec7c43a5010785bd7631c",
    "signer": "0x5fa60F185681545769de01098bB8F29cfbaE3cF0",
    "userId": "489026160"
  }
}