{
  "manageEntity": {
    "action": "Update",
    "entityId": "199063103",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x1c443e1e2056b56e11d0fa5dee179ceace1e5efea3107520e336e9b353c029ab",
    "signature": "0x65c872a9a150df93a6cf2fc5d04510b300fbb4588ac187308a7abdf55f79da061db7705ec4bcb1414f30c454efb0d1fc8d733f454c9b8abafa33a48d648a10fd1c",
    "signer": "0x80E1941e1c1c132CD01Ab8DBf3A20A0Eb62929B6",
    "userId": "199063103"
  }
}