{
  "manageEntity": {
    "action": "Save",
    "entityId": "958944276",
    "entityType": "Track",
    "nonce": "0x6880b1e8c7c99c583ce71b83713562e4d1354b8c04f9960bdc3c736762c8e461",
    "signature": "0x7b653beeea746f2c2430eced32c766fc45379a0184f0e789935abf32c864dc76038c64faf033b20ccae376e1d3ca111e62d4cb20b5bc204738d89869400742fb1b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}