{
  "manageEntity": {
    "action": "Update",
    "entityId": "428975980",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x4088aea2e2248fa52736167dc49ad26a365ce2ffe4810dbb9b6c7642425fcab2",
    "signature": "0x81620807664714c5d28ac82298eccd3f5b136b35327fd115732503adcc06ae014c131ad2d8f84e1058e08517d26ab9a5f00a130e82d310232b053e7f98c005f61c",
    "signer": "0xCc6b600b848D5F9Cd674FFe0cF41bE2B9B2d0a12",
    "userId": "428975980"
  }
}