{
  "manageEntity": {
    "action": "Save",
    "entityId": "82887177",
    "entityType": "Track",
    "nonce": "0xf1c6bd527eb64f43ce57e3e3a5b691d91ad5d1981fbc5e3c4cc3602dbb4dffcc",
    "signature": "0x5c3c4d733dfa42d281ea7c4614fe1e807ee4128be0765e6a6b14f89aaf57d77731b0823f29aa46468abf8f37acf5ecfb831f6d5cb60c858f7820237f93e5ce701b",
    "signer": "0x5fa60F185681545769de01098bB8F29cfbaE3cF0",
    "userId": "489026160"
  }
}