{
  "manageEntity": {
    "action": "Save",
    "entityId": "335799158",
    "entityType": "Track",
    "nonce": "0x1abf83ec0046e86ccc0b1219b3f930a18c5bd143ac1a508f9655a68ba111d1a4",
    "signature": "0x35faad3d3c02a69952ceffa5a47f0390a7296e5c3511294558017e7e3dc34a906dff1b6abe7621b6f90bf516358ea146c78a248307cc77633be443b828ab933c1b",
    "signer": "0x0b901AE3Eb7b439095858D82Ff194CfeD0Fd3396",
    "userId": "167557"
  }
}