{
  "manageEntity": {
    "action": "Update",
    "entityId": "618129703",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xa39cdc3346c69e0c34cf590ebf570ab7b189fa4952455b72ec55180fa8930763",
    "signature": "0x55e482497ead1bcdd4ab33b6e459b4973e7b0adf1ab2e791bef6d1b9830d9cea45cdb574d69ef7b752c6e8f415f6c6a2be5e35462beb5952988da6347827c7801b",
    "signer": "0xF7caba079ef22D808d6dC773e39FE95EaDed2202",
    "userId": "618129703"
  }
}