{
  "manageEntity": {
    "action": "Update",
    "entityId": "407216161",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xd051cf23d431099ea5ff7cbbc8e11f82891520ab9555ea1ab7257962624d4b66",
    "signature": "0x573407e3fd09b2fa3080d6166f9194139427fcbee68704b8aca7b276711c437109bac5576544b546eac61d2f10279a7916c61f8efbaebc89343c77e3151c97e31b",
    "signer": "0xEFAB3332CD5EA33e9817aa57B32CaCb8Acf973A4",
    "userId": "407216161"
  }
}