{
  "manageEntity": {
    "action": "Update",
    "entityId": "237765871",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x9d8558f4478d8e859d8d184b274b01f4e8c8411dc3986b0fa79d8a689f3bb814",
    "signature": "0x3b3c85940908e1f8ab8de03fd42476d093330b090290346b3662fe9082099760637b68c16f620b568ba7b72b86baf068544360e76f455d17cb029947ada343c81c",
    "signer": "0x8c716F932726b40bC9E1CEC18f2c93dc876da1Dc",
    "userId": "237765871"
  }
}