{
  "manageEntity": {
    "action": "Update",
    "entityId": "960881362",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x7ead71b3b01941862e46f9abcbc89383b60b3aabf3857e744e3e76d35b7dac91",
    "signature": "0x2d2b63b8ab35d2a3816d3b4596c4d7c706d3132b22d64bdfe8ac5a0abe5f103e3fbd6f3cfc3bb6d4c6a24d4e9e715ab320bd28991c5d47c423f442923419605c1c",
    "signer": "0x38290db089551C21911A5b6b12516d61e33810F6",
    "userId": "960881362"
  }
}