{
  "manageEntity": {
    "action": "Update",
    "entityId": "407216161",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x6e589bdb96f96e77a3413ceaa8f0f4aab545e13e8b0ed3582af5ed28c9d2ea1a",
    "signature": "0x20854d9316db42dedb27768bf20f2b02717aa1dd4069fc44b6a8483746c666fb1aa901348c361e72f123780a4e36dddd98faabb0544a582185158ae31f4eed891b",
    "signer": "0xEFAB3332CD5EA33e9817aa57B32CaCb8Acf973A4",
    "userId": "407216161"
  }
}