{
  "manageEntity": {
    "action": "Update",
    "entityId": "1870913",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x160ecb3bb46f5834c5fc69b460e16199d5ac6ff1490059c8320ba778bafff9e3",
    "signature": "0x322a2ea40a3bf2ae6de610d4840faa6cfb559900cf2fff7908c8f8051327dd2135503fbc9a003fb965789d27d228396a02eddfc05ce53d5c384b9846bceb18941b",
    "signer": "0x1cE2F33DB2a0c4041F19df291fEb25aac4c02e5A",
    "userId": "1870913"
  }
}