{
  "manageEntity": {
    "action": "Update",
    "entityId": "479039338",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xd7ec927bcfcaa492ba7093f79be848c56cd9c6301bd605431969001dddfcf258",
    "signature": "0x30320b05edac91aa95220f6ac470343b84da2208aa5f22f9164d69b3cc41478a038b55834c928365efd7ba029e2c1b53dafa430588390befa0f4dff8fe6c65d91b",
    "signer": "0xDA5EF39662B4ef70B52C25F33b5637165C93DE3c",
    "userId": "479039338"
  }
}