{
  "manageEntity": {
    "action": "Update",
    "entityId": "757509215",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xca6a344d914ca4812963cea2c7d24d048eec40b0ce088c06a0b8c44cb4b9e725",
    "signature": "0xea65183e67549808de4d965d5eb803bc62fb1090d75fcb5751fcc61d76f2361b1f69796becaf5cc0e09d62be5a769e1f72fa189b66c60aa013fdcb24fe4fd93d1c",
    "signer": "0x748ccCc8022091F8C1B32Ca32f2AeEeC66CaEbC4",
    "userId": "757509215"
  }
}