{
  "manageEntity": {
    "action": "Update",
    "entityId": "545607016",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierabtqhpuvmblnqrxh5qoolaqjsl4ua2vfagdpqn37cz3437t2tw2za\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":71260667}]}}}",
    "nonce": "0xe4b2f0386ee2c3c988880d971dad2a53262455a06bd56f5599cc23794488409e",
    "signature": "0x850e271ff8fe4e5072d51e90d21de7c8b6df5ba16edc003fb3bf4b8fe1e130c11883690fa34a8b2618287fed81eadb1b8aba7655214bf0acdcff27c0aef9161c1c",
    "signer": "0xaB9c9D866876B7d33f01b1363339Ce0Dd23c623A",
    "userId": "545607016"
  }
}