{
  "manageEntity": {
    "action": "Save",
    "entityId": "1157166075",
    "entityType": "Track",
    "nonce": "0xd2c958945dae5f12b64ea4742df6b32a62e45a459bf07b87ef1a95bfa657a066",
    "signature": "0x050c76187744324fecba193dde23c6be0dafe837d7bab210045f8f1e9d7416433e8ce724cf09d952a9eb8a2240089ab105ad8b13384beb901e1893b6e325bb971b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}