{
  "manageEntity": {
    "action": "Update",
    "entityId": "384443009",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x6e03e91d8fc68d33feaf6076e9fb601c8a5a843537becdc7ebff52a3abb5a760",
    "signature": "0xdd19af2571ba37671254655fc43e2ebc563bbb395664fbad1cb46623d0852de171bb5fa5bef56a11c193167211f65d560b1e36b3c2ce44230a041b1087a6fb9e1c",
    "signer": "0x190b45da1e3F48ad1551D8a1D4A02e17d847674f",
    "userId": "384443009"
  }
}