{
  "manageEntity": {
    "action": "Save",
    "entityId": "1069999",
    "entityType": "Track",
    "nonce": "0xdaaedeb6942b5a825021fa1acc640238c4ceee30c765dbb636e7e06c1d1e2e12",
    "signature": "0xb680b40654f90ea1a9c78b7d9ee70bf903477f939ca02c3258e1b00f190fd40f5e7be1ae94d9d3767f91aa9e16af82832bf3a997b316876b8dc59540c4c8769e1b",
    "signer": "0xE7D37531a757aEaf8B2c8037a79C03819edc20Dc",
    "userId": "870684573"
  }
}