{
  "manageEntity": {
    "action": "Save",
    "entityId": "802532935",
    "entityType": "Track",
    "nonce": "0x6fc49de668a00723c57662e03a41ee339bb8127167fcde7f08b6ee3f1fb901ff",
    "signature": "0x06032de6388854f430cc5d095570f269721a14b8343b60036706bae0d1da2193080c7c454bba8d76f1588f1a58fd9f0e0935077f8d03c208ce6f1278d668e9f21c",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}