{
  "manageEntity": {
    "action": "Update",
    "entityId": "250403405",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xdfccd97d6d072c181145fc191fca257d80baf227f045f38ff4c809db02bffdcb",
    "signature": "0x63209250403c78e799e88cbf9848d7aae3d3c6127b50746f239a3c81e094d3093d557d64131455d25df6abad441871e958158fab46c7723bdadb76c3c669d6481b",
    "signer": "0xc28356aE1227eAc8E34f3D204543cAEe0244Bc47",
    "userId": "250403405"
  }
}