{
  "manageEntity": {
    "action": "Update",
    "entityId": "389723793",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x968d68fbe5b10e29b99fcd73b3acc1f0c5337fccd68b978f5b7750ea12aa1fcd",
    "signature": "0x26e592e0ee5bb97639f9bb793476dbb23ce3c5ef98c02cb305ae154f53a4ff1a1d9eddd30f8a3c98a53a83fe242f199561241f1d162ea80323bbab8549eee6101b",
    "signer": "0x4180d53Fa7Aca17354AA923EAAaea9Cd343A43e2",
    "userId": "389723793"
  }
}