{
  "manageEntity": {
    "action": "Save",
    "entityId": "733881031",
    "entityType": "Track",
    "nonce": "0xf6513a6696fe18296a1b1ca254384caa2bc09521972c5ef3fdf1a9fbb75c0eed",
    "signature": "0x71510753d87b820b13639e40812dc27a6de9e435c8a02f21c9b4109e79a41109564337c12b3ae73fac01bda3025715b86db1c2afab7e431e21715429f78043001b",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}