{
  "manageEntity": {
    "action": "Update",
    "entityId": "747043838",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x4962513dce5e8dc4d7490ff4a9ad5b1f9f6fb05c8981ecc0c6fde5f25cbb0879",
    "signature": "0xe5fcd418007ed431572064efe86b5b370dd0deaba1e8418e687506ba2f13538068996f8d26bbe89bb917017a6e2a70d7f0c250e1b6791ad925b75fbc5f98bb2c1b",
    "signer": "0x170C5038579655d90890FD6a32037D771382C4dD",
    "userId": "747043838"
  }
}