{
  "manageEntity": {
    "action": "Save",
    "entityId": "1344066750",
    "entityType": "Track",
    "nonce": "0xfe93e99d0a70ff62b70d711f3640a5ffe266778961a02d1dc6fa208a2c9b845b",
    "signature": "0x571923995533bc438bf749bcc7b97aa0dc915c65f881f07366dcbd7596ee532759dff51f427e974bd7ea59c4ffdfd1e8af4ffffe6ffbd2e693a6f647df8f021a1c",
    "signer": "0x7b52e6AA15Db4Fc3A84AFF2b12e5B8B128eA8610",
    "userId": "808512351"
  }
}