{
  "manageEntity": {
    "action": "Update",
    "entityId": "873212552",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraiuylbwzrpedopaiu2aib5uxgb6sdjv46dg5ffr2edlzgns4tcpsq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":409453817}]}}}",
    "nonce": "0xe54de6fd7dcd7e0e68ed2ece07399a3c791c31793a4e3fd77bf725a735c14fa3",
    "signature": "0x03d8e15d694d8f9dade02e1af7075a38275be60091e0fb35fecf794040dfec697f9962e9baea24604bf3b3178de66b53c10c5fcfb99a60a95b8a7a983180ef981c",
    "signer": "0xd70cC881fbB38d68490cf7A578B24F81B4d24fb4",
    "userId": "873212552"
  }
}