{
  "manageEntity": {
    "action": "Update",
    "entityId": "308261833",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierav6hyz53kepjlzwbcfrn6y4n726phms3qlwvprmp4rutkigfgflca\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":616769041},{\"type\":\"playlist\",\"playlist_id\":1312755949}]}}}",
    "nonce": "0x9c61bd69dcbfd6f77b1064b5a297ed2aa252351d0d63ebe79551d8a9b0ca7489",
    "signature": "0xe9e8971fd2794c110f11249714238a90817020fb898a37ae235859755b17528a1f01ef0f230d9094ac5cc06307279dcd97c4940809d462be59242d529b1b33731b",
    "signer": "0x4B0a22A25ed0c580309e8a5565722854C6b7873A",
    "userId": "308261833"
  }
}