{
  "manageEntity": {
    "action": "Save",
    "entityId": "527182418",
    "entityType": "Track",
    "nonce": "0xdf5d627283fc5f375a2938f51c3e1f201817ca39f5790fec22dbfa52efcbfdb4",
    "signature": "0x05b6ceec004e1d695095a8dc2bc7affdf6c53acc32e8eb93d7443d62da450d381b214942324f127c3a947540758fa55d66dc41211a7aebbc0406806a5351c8151c",
    "signer": "0x0E71C12c426F5C9206F778713f48B60477CA943b",
    "userId": "29088079"
  }
}