{
  "manageEntity": {
    "action": "Save",
    "entityId": "1875937850",
    "entityType": "Track",
    "nonce": "0x10f4e882070101cc313db1afa4e98bae5961dae04b53dbf779e6b373f4b238c9",
    "signature": "0x5babb95be6a9410b3fa88909d9a1504c04628fa50d820cb759acefdd75029c7e1e487c48fae51fc63ecf312e7df0ad74921f7ef8abdfa3486728ec51eeda9d1b1c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}