{
  "manageEntity": {
    "action": "Update",
    "entityId": "538676799",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xcf8a237f1b8867de734e50b3c0627dc5618ae50aef852ba314553e96b62754e5",
    "signature": "0x801a2dc21213e3678ec1ab6e6396785e0ef509fe35ee55ee20fe7190d4d9516c7f23c080967b328f162024d4c2eaa5c75992cc8179f33e16c992811cc2ac73b11b",
    "signer": "0x0270E7cEc81bAE1fC92D46090cA8E981d5691aCE",
    "userId": "538676799"
  }
}