{
  "manageEntity": {
    "action": "Update",
    "entityId": "378649716",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x92c75ed4cc062997c5727cc9bbb193b6738546404c478086303228c72235bc3a",
    "signature": "0x6400d86817aa58941eef7cb09c84e2658b99ed9ffa578012d0236b8c4efec7847f6f8d667aad31ecc1b480421d9771f7f5ac050aa69e0d3b7e5479efab64fbb91c",
    "signer": "0x9c0A34bA0cb154Ef08cd898B053E0B83Eb1C409b",
    "userId": "378649716"
  }
}