{
  "manageEntity": {
    "action": "Update",
    "entityId": "640804276",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x1dfc4207a98ee5b88f6573380c37d75a58f111c5dd63f1295842c01a2a2f16b1",
    "signature": "0x36b94dcdf4d4a6ea678ab4eb4a3d71e1b654cf0b8057c7b557da4abb5931dcb4523b637195edc4bbc7283cdd9b672da77c7fc5953c2a6cbb78708102b532d7b01b",
    "signer": "0x2fff57D5628D87Ce98d02775C9cF63dB765aa6c5",
    "userId": "640804276"
  }
}