{
  "manageEntity": {
    "action": "Update",
    "entityId": "543200096",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xae6620ee0c42d2a3a2096eb7d23ff335c47ca3a55b914d71414c47ddec8a88bb",
    "signature": "0xa178a8ca124bc916ad68b4190526908b01b4aafac47973e7da0496ae886ada0d0fb180dec52f9e367b168049ab6d516a54ef526abe5d54b71d6ef08475d5b2191c",
    "signer": "0x235ece5863Ef9e5dF1a96dC6b5Fbef48423131c0",
    "userId": "543200096"
  }
}