{
  "manageEntity": {
    "action": "Save",
    "entityId": "1275798976",
    "entityType": "Track",
    "nonce": "0x2a608055fc0aef9804e6b648972c1fda8685c34d2848fbd0a66ee95424f5b7c6",
    "signature": "0xf9762243b4c60599fafe64942c3865b6233d6eaaa659c5acd02d1c0758bbbf4631ecbabd96c9a704e31f433285df74c2f58af28969894c3d5f3c05b84b8f266c1c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}