{
  "manageEntity": {
    "action": "Save",
    "entityId": "794530454",
    "entityType": "Track",
    "nonce": "0x51c2c030d852fcf9994991b4f00d6ac9323508dea11427c726dfef576721fc78",
    "signature": "0x3aaef8672441a90dc64b7ea4cc9aa499ccd1209ea2a19ace016afd3e2209bf4f1ea57e92822629b021ae6aa4a7bb5900af4dd7b160431c1f14685ab682a9fae21b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}