{
  "manageEntity": {
    "action": "Update",
    "entityId": "304116661",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xd3e49e4166923901aeb96ea106c0af7b8171bedec6fb0c05e2ca8a809b109108",
    "signature": "0x3738ba2d49273183530ece94589ab50663a898fbde429c77c70198ef6baf29042226304ac183d7d91f393e2b42974b52fde866c5db1756266f5b9f67be59c6661b",
    "signer": "0x435cf294476b32E672CE5c2A0f51936ABF460c3d",
    "userId": "304116661"
  }
}