{
  "manageEntity": {
    "action": "Update",
    "entityId": "449044166",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xf3788eb6be76685d6971d77e2b94b15087ad0cd0a3cec05feb46e6fd2eb49b53",
    "signature": "0x4a556b00138e4c6c5fa76101be077551a30f7a297728ae383df153b1df7f55fa38e39711f83c3d463a1e2924e1868c83f6da16a684b70795d33863b5d2e200571b",
    "signer": "0x6f04C187ccb2ebe59052a3167b693fB276d7cD70",
    "userId": "449044166"
  }
}