{
  "manageEntity": {
    "action": "Update",
    "entityId": "275350856",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xdfeb66e78fac3f21ffb328e99ac7ad000381a5f38e7a4f60ab61d216f4f3107d",
    "signature": "0x76a4250120b050d4e1820144121a77147ffaf975ee6c67d62ff3970e6e03559f4aa278b5d5180c607688313862afbd66f50f80838a7e57e5d378bbdc848f8b701b",
    "signer": "0x99cc71DF4121e0a865e7D094866224A204ae2b44",
    "userId": "275350856"
  }
}