{
  "manageEntity": {
    "action": "Save",
    "entityId": "1062685",
    "entityType": "Track",
    "nonce": "0xb843deddf4f644542ddc2b0b0cd1a27fe748e835c66f56d6792b500fa1e4a4a5",
    "signature": "0x30138f83b20facfa7ecf5f1b4a683672da8da093c4eb5f857e04adb38e403b7d44c7122ca6c3be2d68c088cb6d21889474d8d4e9d78bdc68f006c4c63ea0d6e01c",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}