{
  "manageEntity": {
    "action": "Update",
    "entityId": "851456191",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierawfzug7mvd2fgpts3zpm55aneozxlzprgt6j5ngzce2lu2vr7wlgq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":2139154765},{\"type\":\"playlist\",\"playlist_id\":84613424},{\"type\":\"playlist\",\"playlist_id\":2912385}]}}}",
    "nonce": "0x4e3ed1b51bbb58f7de5c031d9fc4c730257005f6b30e89c426a407767d634ea7",
    "signature": "0x81a0dbe7256ed8e71849ec62d9537284be9aa879e324151b38031ccf44aaf52c6d1e726ab9be57c871c16fefb3d5a86a24dca59abcbea85b6e74e4979766cbdb1b",
    "signer": "0xDCE3db3a2285CB6f667C9B48Fa88620F6f94232f",
    "userId": "851456191"
  }
}