{
  "manageEntity": {
    "action": "Update",
    "entityId": "853312443",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x5d949fd03bcd9b7c93ee581b4a4afdbcac42646fe1d26cf041e1eca4a2e920d3",
    "signature": "0x75e49aded7de9ca3772d0bd918356300139ea00218f52a9a31be99f74995a41e3d66a9c67b6714b3fdcc7c434f5cf971a0dc6a7fb7e3925f7bf1a14fb1f646b91c",
    "signer": "0xA88821804C230CaCb69f0C2d6d5a24D4d2a31ed3",
    "userId": "853312443"
  }
}