{
  "manageEntity": {
    "action": "Save",
    "entityId": "1408026720",
    "entityType": "Track",
    "nonce": "0x096cb4af760de44fadaae44f6b45e0355dd068397aca7df12da60f0ea76d5e5f",
    "signature": "0xe836d80406a882aa9dd1ea466338e7c209a1c67d1ec41fbc64095fe9183962fc1b808c39ae953f97962cc36db4e1ed35c536aa8f4d132db1839aacf2571f04dc1b",
    "signer": "0x6AAB6EaEa3f7F15750b649C269b0391dcB19dEeb",
    "userId": "92019297"
  }
}