{
  "manageEntity": {
    "action": "Update",
    "entityId": "623592851",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x02524c68f45c8c7b111f9cba0e5788212033fa091f545f71c0d4957639845605",
    "signature": "0x71d27d524d06185acb6106e9392f5d288da24ba9e957e1f8243147a9d78f66c761857174ebd8443563789d8e489a2b49cd3ea350dd974714a4eec02422dbb1211b",
    "signer": "0x0fb9cB949F7d9C24b5c9C887E710FB13f0E1d48b",
    "userId": "623592851"
  }
}