{
  "manageEntity": {
    "action": "Update",
    "entityId": "40456963",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x3e95d70ac4e6639f0a7acf700aa0db878400acc3fc5f6eaccc81380a248e4628",
    "signature": "0x91b85fcc60ec4571bfbc1e6511e8a6ff97ca6590c6ca8e5ec6657c8cd16c81fb0a365f0052a725a473717cebc11a0d59c7d618aa7f36e067ac76f0ac54a5b36e1b",
    "signer": "0xc03B0DC91D4dd69BB843F957bAe8D3B7aA1317EB",
    "userId": "40456963"
  }
}