{
  "manageEntity": {
    "action": "Save",
    "entityId": "276468099",
    "entityType": "Track",
    "nonce": "0x468ad762d2abcb28c6b9819226b725fff8884421ce8c6d6a4652f4855a88c6f2",
    "signature": "0x3e9bda3e227bb264919a56664b0b2f683edb2af1cc46fd6400b0d43cbe9df3044d94d28dedd35f553180dc0ed351a5e14124a86d01e7411f1efa00410150b5891b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}