{
  "manageEntity": {
    "action": "Update",
    "entityId": "212012923",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xa0962237aedcf274bcce36c387483699f854fae93211647817ae794ebb76ae6b",
    "signature": "0x89342aa64f8fd586d6b467a48883412c20e9affc8c1a9c2942f47f3594e0c25a7b36d8c49d123af5653bf0fb74c06e24ee4afecda37f175f4e681eb8281fe51d1b",
    "signer": "0xDAA64Ac7b864f54096b2d3C5FAbaECC8563A4293",
    "userId": "212012923"
  }
}