{
  "manageEntity": {
    "action": "Update",
    "entityId": "873212552",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7clwpxah3x7pthc2mgo3d64los64ldygl5zgjwqmyf5hsrp6zylq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":409453817},{\"type\":\"playlist\",\"playlist_id\":652901993}]}}}",
    "nonce": "0xa878101555c54a7567b4bce927836a8a1db2a979cf40debedb8fa9421ff9ce6c",
    "signature": "0x7c69fa412c72545a846903b905de857b9282ed2a2e776c2ae73c3ed691b3ca9756f9dffba0becfca6ac2ecc5f7baf54ef71f00f9d15ffb2cf2312555e45d4ed21b",
    "signer": "0xd70cC881fbB38d68490cf7A578B24F81B4d24fb4",
    "userId": "873212552"
  }
}