{
  "manageEntity": {
    "action": "Update",
    "entityId": "308555958",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x7dc7ba4fd483d2e8ba0081fa6bbb8504d53eafe2c032f530c05899bd63985637",
    "signature": "0x4f1353cb98c1243cbe5b81f39c0ef3d609c3e294c0243a47046616867828063a5bc84dc5c72bfcf6b1a8d62f369cd3361d510527e4e74fe992325b28d89e0e281c",
    "signer": "0x641D58d14cccB895cC85f210F1CD2B998A692F67",
    "userId": "308555958"
  }
}