{
  "manageEntity": {
    "action": "Update",
    "entityId": "453194591",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x111f4fb5661de5cf6499801e8f408d2ab52602f5d5eb1b16667d3210c2a1e113",
    "signature": "0x5adc76b060b8ecc78e409b44b56fba8270adefcdf7a9c481bf1566e1d9801355243e43d44116c64b2aa64c66143305e388228367a7fea926f609486fc0308e401c",
    "signer": "0x6Bd4FFED99DD049Cd6c4d3DEbA9CF0EC730Da373",
    "userId": "453194591"
  }
}