{
  "manageEntity": {
    "action": "Save",
    "entityId": "980835796",
    "entityType": "Track",
    "nonce": "0x4805adb083d4211c00ceee4fe12068fb18410c1b0f0e6817080d7d1e6257af4e",
    "signature": "0xedf695932a2ddc60ce95445db4f15034119cc14db4f383b5bc9a1b1b0d017ecb6128caaf33a83bfd60f7a00244cabdb887a427ae22ef56262d92bfeda72260841c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}