{
  "manageEntity": {
    "action": "Save",
    "entityId": "1012699",
    "entityType": "Track",
    "nonce": "0x2cce04ee0ce79a6db22a4669b1a4bd126ca6c0b1adc5ea4abcaec637685d6d45",
    "signature": "0x5f6e7453ba9ad2d0b5649a6f8aabdb4451a8ab8062048a0faef2f7d6647aa1214a57c102aa75f4a2301419ef7890fc9f8b25eecff15cf797df0340d9db9342db1b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}