{
  "manageEntity": {
    "action": "Update",
    "entityId": "501224594",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xf6ce08638c23ae40fecde843e99b45c42c5b92eb35e4647c56fef8430e88be88",
    "signature": "0x9706b6f3c5460c4eb007eae53b3d2a9fc404e928922596e50f54c69ab550f61b47cbe449bcb14d0e63ee4b57d3a8a3c4bc93d8ae4394ad0f18d3746145fe37f81c",
    "signer": "0x04d2AeF69165e1c1d73288e89Bf7e0Bf14608308",
    "userId": "501224594"
  }
}