{
  "manageEntity": {
    "action": "Update",
    "entityId": "865727528",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x39b105853025ab8a7e1dc10ff139edda39e18dd8246ed5bad66586bc483efe8d",
    "signature": "0x3feae9f94077d3cc543f409c110624a28ab1de786187f0f1fbdc3857b9ad0f9e42459d50096e95af969534e64e383b43b8b9b4884804488ddc9eb37778cb6cbc1b",
    "signer": "0xF0783635698196532d535C10A2dce6f654eB6bCc",
    "userId": "865727528"
  }
}