{
  "manageEntity": {
    "action": "Update",
    "entityId": "450789296",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xceb43b21a95f9104d226561643edec70808c55150f4dfea5daf041e0e6d2ac41",
    "signature": "0x82948512073689c6ae3ad3bf06550eec2a7fe06f5d4050ec49b6cb93b1b161e4139231f0331b7e96f499f36d04202785da670ef156d11f86f004bbd5558070081c",
    "signer": "0x0Aed69E2c3fB017744322f22f1F36b6135f5E36a",
    "userId": "450789296"
  }
}