{
  "manageEntity": {
    "action": "Update",
    "entityId": "785201",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xcf048e213bea74ba8a386928ebd19b8d5f7c8f056b1fce5f3654f31347ea2209",
    "signature": "0xf6864c9e6d748bced403223a1e7bc2f34a2e8732861cb6954b66fd36a981915f5f2aa8a9298c97f2627daa838f92558b94eb9ab9c9965bac27469e9d07bda4141b",
    "signer": "0x7C3854df2708D5dc9d22bA310Bc0f73C074f0321",
    "userId": "785201"
  }
}