{
  "manageEntity": {
    "action": "Update",
    "entityId": "837401412",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x30042d75f052caaad48dca55e9ad880dedb872438c91d181c1310c5b85764aa6",
    "signature": "0x789293635ee8e117c1b6a01bc7611e06a7b39166bd58e3ac66e66ae1a2320717781d4f6b62b945222666a98b9d2aa42aedaaa443ee6f8bdab1cf2208af03175a1b",
    "signer": "0x5eCCC3Ca0b27d770EDa390d690985A1D81802ea2",
    "userId": "837401412"
  }
}