{
  "manageEntity": {
    "action": "Save",
    "entityId": "929004",
    "entityType": "Track",
    "nonce": "0x42b9be6e88e9f1cc1d8748afbef1b2bc876a8a1bc122056684d4a6b3035680ce",
    "signature": "0xc6f1915a740df2df032fff139b33b0429c1d27dceaa28bd7fa9eee0d3775e7802f222f04edbfe1e8612d543d710d2781388ad5fae54c10afab6aa6d31c2ccf961b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}