{
  "manageEntity": {
    "action": "Save",
    "entityId": "1370154388",
    "entityType": "Track",
    "nonce": "0x53a28b8b1d32688ceeb4bf4080f97da43b2e267376470c6cce3a03d135a17663",
    "signature": "0xe6c410e61e8f2a9c5df55a332bb8777f4082db5a57fe5c219c5c42ac7743e772096c4c5e9d741368486138b6bf0513cc5078fd7d019fd1d47cc12d48f92e533e1c",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}