{
  "manageEntity": {
    "action": "Update",
    "entityId": "754312475",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xf4ceb8ca6190ef2125fe34649561970c4bdfe5959cf984c88689372f0838c268",
    "signature": "0x7cee0cb1ff5af6114286212e8f502e569771caa81998d1ca9b46e78a39fc37e740db011166cc69305d38f72ca0d8ae4dfff3577b112306858c0c7d712d8a7a1d1b",
    "signer": "0x3136D6320D99CC5f610e2AcfCF37DEa2A5Ca1433",
    "userId": "754312475"
  }
}