{
  "manageEntity": {
    "action": "Update",
    "entityId": "51270411",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieray5rn7bfch4xxuwqy4oabhanyzfikaoue4cleoxqpcrnbnx7hrkga\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":87904}]}}}",
    "nonce": "0x580918cc4553c653a8550a68847073eecace0ed8f3a8bb938dce858563ff32e4",
    "signature": "0xe237c855ea1442018653801d84b0e1157bb5667b6057eb63828f7e3e81acd723732c2b112061e17149e46b74cbe7e17b0790088a01c8b58ce92387b32e6e97941b",
    "signer": "0x1F5b327b06F23985a2eB7AcDEE087c4CE3F79860",
    "userId": "51270411"
  }
}