{
  "manageEntity": {
    "action": "Save",
    "entityId": "2013870053",
    "entityType": "Track",
    "nonce": "0xdd0a833988894426b47d27c5d09cbd11235474e664fb16abd681369f7c7e691f",
    "signature": "0xa8df1441c827d53c1a7900b77537ce6b8436e99bbe879e3e25cbbf43a6a133b873588f7563cc10c813727ce3a7af5692fab5a20d58c548a2818c3a9bd328f7051b",
    "signer": "0x5abad058d33E1C0C0A69d85BA3181678C1721765",
    "userId": "632918751"
  }
}