{
  "manageEntity": {
    "action": "Update",
    "entityId": "936213876",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x3bee65b5266fe231ae120dd47ed19f6b92414b7df96e2f8794775b012f5a4bfc",
    "signature": "0x8f742098f97bddebd44ae7f259427269f49c07324b999e3a96dd3ba30438391120725ede4c603ee94917c2b4b4f61c332b7d248fdb471d8a55c93457fdc51c931c",
    "signer": "0xdbb5FeAE65617ed3C8616A66B1152898647cb83F",
    "userId": "936213876"
  }
}