{
  "manageEntity": {
    "action": "Update",
    "entityId": "572724018",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x30e6bca18d520f2dd23521f227b86848d3e982da6bcb3416e929fe675f2fc836",
    "signature": "0x117f2befc8ee2824a3a1119ba6cc8cc2d330c4b4f7073a56fa5a3f5fa396713430db1a26a3dda9847df373e2c4723d51509dde7c3e84281959c012caf20cb1a31b",
    "signer": "0x5442166ef935Ce2C48B7d89A27A0ADbFCA23fb3B",
    "userId": "572724018"
  }
}