{
  "manageEntity": {
    "action": "Update",
    "entityId": "534408612",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x11ea246c8ff6dc1b379d11071607297afc65c4a7606f00ce90a2949814253521",
    "signature": "0x82f79f86c089d5705991f5ba09d75c065bc2900a5e3bb1efdaf5c3e0019db7ed08be9759b5109f9f3abe79263807c1a41a870bea3fa213ed6f895ed472a275d91c",
    "signer": "0xD05c50E9379973376d0cA28B2404f66DF52d3570",
    "userId": "534408612"
  }
}