{
  "manageEntity": {
    "action": "Save",
    "entityId": "1106554685",
    "entityType": "Track",
    "nonce": "0x6983143eac9f80d39621d76b1b77fa93d8a8c97ad9496deaa04f433f2e2d92f8",
    "signature": "0xb5a1f1823cca4fb46b6a0bebe3333e92976787b65ecbb14f0aef49a6b50a68813a61d69f7f239b519082f4884853a1293da6f80444b7d1b8e5a24e0afc2c540e1c",
    "signer": "0xdB791822A11f5aDc830669bdADa8121a4558D7A3",
    "userId": "347139808"
  }
}