{
  "manageEntity": {
    "action": "Update",
    "entityId": "385835809",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x7467b77ac9128c4bb26033cfaae7e050d0a675bd4263d9bde1064747464b97d8",
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    "signer": "0xfBD8EE6a8F149b22584fBAe95DBfc4F696533620",
    "userId": "385835809"
  }
}