{
  "manageEntity": {
    "action": "Save",
    "entityId": "1056567759",
    "entityType": "Track",
    "nonce": "0x19c45cb88dac695b880af90fa3d0d1ced4622fa9a656d2529d149c57503c367b",
    "signature": "0x40d7bd31da13086da6d2695d52c50947cb37147217dfa43b46641b8406509e6c24d2c1967396732e4cf2264faf164a3298ce307a2bb6105d03ef592ccc9a851a1b",
    "signer": "0x2B171214e998033E806F72301307B2160CD94DdB",
    "userId": "489165782"
  }
}