{
  "manageEntity": {
    "action": "Update",
    "entityId": "523918731",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x7fe6ca2af21562bc7cdf1271dc2a45c3a7aad8bc7dfa70272c0a7d0c7a5118a8",
    "signature": "0xfdcef59b5319ceb8d6b5a1a089d9ce51397c963f36ebd8c0b8d9a415dd951bdc7afd42a6bcdee46e8e438a3a6c0f7f070042753e931d00dbcb23788d28df31751c",
    "signer": "0x3B56F03a62298a40720ab731A29231Ab2391037A",
    "userId": "523918731"
  }
}