{
  "manageEntity": {
    "action": "Save",
    "entityId": "1153501110",
    "entityType": "Track",
    "nonce": "0xea670245aae3ebc9301daf21f51cbdf2765cdbbaddc07c2a7758d58bea36ee84",
    "signature": "0xc25166587c3dbbf4e56b2e80be5bda8e0dd8e70b70f63fd3f5bad3fbf973210c20768b52d964f70d9f107e3ada1d8eb2ff9da743c4eb77c7062306d5a5a0be3a1b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}