{
  "manageEntity": {
    "action": "Update",
    "entityId": "451729998",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x43022ba19fcb026f66a37357a4884a79980633a7afe95efbe12277f984718087",
    "signature": "0x4602a03bbc4c7fe12c986319cc2c7c0c3205dac0b3d40747866b60c6b007096f6642db63ba5ca6f77d651eb5155c32795800869b39d2fc0c611438ce6bdd164b1b",
    "signer": "0xC0f8D2C092ae50e1512d827eBeb817e1ea4112E0",
    "userId": "451729998"
  }
}