{
  "manageEntity": {
    "action": "Save",
    "entityId": "1706805896",
    "entityType": "Track",
    "nonce": "0x6f82c715711b2cc020eccd3d5a2cbe7bc620646e8b8fc65736b086ba485e2e9a",
    "signature": "0x09b0a31926bdd241b37e16b32cff9ecf23ef9ce0fe6d87a6f4745373644346c3084b873bb6e1d43b1f8cf604af0044173c078e7b81a25c1c2a53214acf7855ca1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}