{
  "manageEntity": {
    "action": "Save",
    "entityId": "982236997",
    "entityType": "Track",
    "nonce": "0xd2ffd80e26e8fb214b3082ceb9cc5ae2f77af039a9a096e12b483d5592a6b3af",
    "signature": "0x3b6fc8f3cb31300524b01f0e42565731deff98dc839aaa7d3a95c9bf403e5a7c561b297c423888caaf27e8950bd9131ef48d0e40f79b251013591e6f9ffae4341b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}