{
  "manageEntity": {
    "action": "Update",
    "entityId": "275350856",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x8f47f78bf795497d3b2069bf9431c5163fc5034a5a00a24fc7d3ab5df3e9e362",
    "signature": "0xe33d53f3e85d26a9d5668c197919544b211d6cd249fb3845e545478ea3caf1f16fad3806caf1f34e212a787bdb7dfd6e555bd6522fa4074366294b6aafba83381c",
    "signer": "0x99cc71DF4121e0a865e7D094866224A204ae2b44",
    "userId": "275350856"
  }
}