{
  "manageEntity": {
    "action": "Update",
    "entityId": "212546770",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xe6ba01a280bd2fae81f3dc824c572b20385fdbd944b96fad9faab930da8433c3",
    "signature": "0x4745463d974ae9b2f83751789b22778ef4ebe84c434a10a86c1536443483626961dfb91816a565ca7c553d78953696cac703f0935df6d09055986bc734beb4681b",
    "signer": "0x92fF98fB0C791729FfC37e15987DfC14E4f2Dc40",
    "userId": "212546770"
  }
}