{
  "manageEntity": {
    "action": "Save",
    "entityId": "1715438648",
    "entityType": "Track",
    "nonce": "0xbb588b397c4bd36a4192fbd504bdf0350c69a529c48457aedfea1f8b1e3a2b4b",
    "signature": "0xfcf156646b1d46e4d5b8d01e277efcba1e162191b326d3027378a4b6a07c287a638ffe88737f23cadc554e0a02537817b7ab3e8ec6774dac7a6a2ab43ea9f0bc1c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}