{
  "manageEntity": {
    "action": "Update",
    "entityId": "216575336",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x6d441824fe0b1ddef4fb7d8a5151b4204e19bdab9362fd7409dd40abaae56715",
    "signature": "0xb77ed9f460bb394de3e91081887d4f07436c946bbc349a79c27c0ed86997e70b16e6a5fa78eb798ee0bc6c27713f8eb3a218fcaf2909b2e5f9878793cd913ab01b",
    "signer": "0x45eA6B73F5847C6151ddc80c12BDc7cCC16ECA92",
    "userId": "216575336"
  }
}