{
  "manageEntity": {
    "action": "Save",
    "entityId": "2111362335",
    "entityType": "Track",
    "nonce": "0xfe156c493524bf215d09589c1c163d67f318ae0b2c5a90c662b4645424f3410b",
    "signature": "0x8792a19ec73017b48c731271ef4c2c442b98e7c2009fd9402ef103d07fe284f14f7ced41dbcbb2fd2f1be7503707dc0763233690ded68acf657f67a7bf492e9c1c",
    "signer": "0x56D42B79b21D81D9402f53017C457dBd831591B5",
    "userId": "918223593"
  }
}