{
  "manageEntity": {
    "action": "Update",
    "entityId": "212012923",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xfad2bc408c58068c013f41d73342390f0ec64970603ce3cf94054b1a3124dc06",
    "signature": "0xcc67b657d1edd41d01cb937371321b8cd4a7ebae10dc8c4aae5579eecb59ed8356e1a7a344b7d8d7f1a59832dbc07827a87c6e755e590621be2f052b7225286a1c",
    "signer": "0xDAA64Ac7b864f54096b2d3C5FAbaECC8563A4293",
    "userId": "212012923"
  }
}