{
  "manageEntity": {
    "action": "Update",
    "entityId": "567478448",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x8205bd00a2bfbed12133616f025fc75bdaf1eec776ef80f938d54cb582000f15",
    "signature": "0x70c783e36c12d8f57ff051afd0749d451196829bb1fbca098a6df3a788f638e70cc629d7c817371b50990ff5b8dd5cb5454e6a86d226bcbca48e6b0a0f32e2821c",
    "signer": "0xb9A77dACfd704B9AFcA2988f2c7c1E92819921F3",
    "userId": "567478448"
  }
}