{
  "manageEntity": {
    "action": "Update",
    "entityId": "333304008",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x01a2903e788ae01f88f72934422d308f2fb141dc58287a5e43217ea0c3ffaef7",
    "signature": "0xec22a99695822f7016188cb542b46aa5fe8dad45220743007eab896ac9ad31b46018ab45801fd83c488f1c8e4ebb0197aed4d69d438cb382f747f15fde47f6741b",
    "signer": "0x7a78569646ADa00a4d555F20fA48e9cDb9ef14F5",
    "userId": "333304008"
  }
}