{
  "manageEntity": {
    "action": "Update",
    "entityId": "275350856",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x5e8c7d253c1ed9ae0ef332b81320415f14e2c5160b3f75c64eb73d4f9bb1e738",
    "signature": "0xc0aec6bea3cbf0e6eaedb89365b2c0aa954e6aefee3f458792a38e513e3e1cda21c065ef506d59d32cfdfdb3ed45e97375f226494c96f0ce038bae9f138956bd1c",
    "signer": "0x99cc71DF4121e0a865e7D094866224A204ae2b44",
    "userId": "275350856"
  }
}