{
  "manageEntity": {
    "action": "Update",
    "entityId": "478491171",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierawwmq6gh3u7scdthjsb2g2vxzldisaspjvjrpmx4ce32ghn7vkl4a\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1981158286},{\"type\":\"playlist\",\"playlist_id\":1773598463}]}}}",
    "nonce": "0x9b49d6de53c03871ec81a49f0a5df8a46de080000eb2e548538ad540bcc689e0",
    "signature": "0x6a6e7339d0296d094ae4256bc0d05879af4a0792a1e946fd131daec3ef8aac201e18eb836b20c3a2d72f2f73f507516a9879ad803c4559b03f8a4d18f8eb55e71b",
    "signer": "0xDeBB0409dA324f94c21071bA9D4D97d95a02ED62",
    "userId": "478491171"
  }
}