{
  "manageEntity": {
    "action": "Save",
    "entityId": "32577",
    "entityType": "Track",
    "nonce": "0x4e4266e90c6e92f7f917c6d940056eed585c230a05f28b4b3be4c08b6bfbb9c3",
    "signature": "0x15f4ef0771e0219c7b2f75568ed7b5306f9462cc8ec54828b17020ec1c175475719677faa95ffd310863db5ef9298fd70c6ebff0e8eec13611f5778cc080e8991b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}