{
  "manageEntity": {
    "action": "Save",
    "entityId": "2007130460",
    "entityType": "Track",
    "nonce": "0x0ab3d8881cf005445d7235cd05e6dc2e0e3079fa26dbfd1be58d7cecf9e8bdd2",
    "signature": "0xea1055d44628f50fe1223d79750cbdce7a5094f40d5580d0c01b3dc805551e51005eb22c5a1d576c8f50191f4be2e993b0e234844a6d4a7179eb528850d84bc61b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}