{
  "manageEntity": {
    "action": "Update",
    "entityId": "860375571",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x5b69c20a1286a03162af97a98e738f98039576f690975f19436980f8f4c7ec6b",
    "signature": "0x90010bfb949a3bc3b2426cc986971b251a39406462f8e6557ddf4cf86316349e5bda1cad6e75eabba5dc54d037c5d8e6cd7300308cf09699f25be3b4e3e148ef1b",
    "signer": "0xdC840A61774b0850116f9705f191a4c8E39C3905",
    "userId": "860375571"
  }
}