{
  "manageEntity": {
    "action": "Update",
    "entityId": "392894187",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x2d9be678d797cdff7a3903cd9fb5d40c25a54558a2b0ee573a416e4066b6233a",
    "signature": "0xe92a0d713cec4a9635bb32592737706df1cec28851379d818ac4d9ef00ef172719e7e2005e7fc9102516ffb1211d0b8e6eccd83ad16d03c33d89b1729852f0891c",
    "signer": "0x16eC1CF4f324EACfAa9D3F0D2add22A0e775fb3f",
    "userId": "392894187"
  }
}