{
  "manageEntity": {
    "action": "Update",
    "entityId": "407916583",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x3db482fe23ea85db58bd19e57e12a6d59b2d8645044920b5a9cff29cab9e49e6",
    "signature": "0xb0b699a4d19e2f051742a84e88a2cf93fa0601e566e4c69c483fc5c8161e038d014a8621dd9bf36c6c9ce8cc35fcadecee59c90669e2ec780c464fbf027efe621c",
    "signer": "0x7007B05fdE5305e23af69AA5BAEb803cc6311b7E",
    "userId": "407916583"
  }
}