{
  "manageEntity": {
    "action": "Update",
    "entityId": "673773101",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x851cc43a080bb633a672d493103969f7de7ff5725aead1186682d85d07824bac",
    "signature": "0xed1834f0341c4fb3ab70ee67f5231974b261315f355426efe2560d1c3f8460923d1d6757713af2fef2b1557540e0c7d20c35854de0048badba3f9e11f9488c1f1b",
    "signer": "0x5Bc05b706D3864d34607f61EB1cb128EEf4453b8",
    "userId": "673773101"
  }
}