{
  "manageEntity": {
    "action": "Update",
    "entityId": "852331676",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x9b8583e23a2d2ffa9202f78b0ce037b6efb624e0977c1d61ae60e7b4b3064e53",
    "signature": "0x837f4b231c8439a19c8efe73f0e0e61a524b19a31e1354bd81555d28e215362d5ccfbc61da9869b202cb53c0a845398daf9a6325be834db52c47aa58b707f0ae1b",
    "signer": "0x52a6783D5814fb237522A58FCa7834aC363703a0",
    "userId": "852331676"
  }
}