{
  "manageEntity": {
    "action": "Update",
    "entityId": "125075197",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x947b20e34cbe0ab87edf86f593ffa69441b26de12666c8d199f32e31b874796a",
    "signature": "0x7fe5f714b1054b990d8ff5d556772daf7c1da51c861be8bb14b2fbbc4e04b07d3b54751b1a7e8422e1ee05dbfb987c9985913c4981eabd35a40c3ec60737e3fb1c",
    "signer": "0x9c4772EDa7Ba94E7E1a35ab79e3b819DB9fE85dD",
    "userId": "125075197"
  }
}