{
  "manageEntity": {
    "action": "Update",
    "entityId": "300815705",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x6ea3f08dc16076154ed1e027e42f43fae154581682df0bddac19850ab7033196",
    "signature": "0x392c154043b9ec3697e9bbc81a9bd05756523bd9aeeaf263f9a8a19a719159624fb9a15c7c8376d9a3a58d6f8463d2bfd69c1662428c3c5bca906876aa05a6581c",
    "signer": "0x17E5Cd991203390519d2FC47aDbaC0DF4B27bBe3",
    "userId": "300815705"
  }
}