{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "580720856",
    "entityType": "User",
    "nonce": "0x5737416e0aeb2dc069e24940a817ca9c3cffb28b0d2109f3cd2381d95f76fa61",
    "signature": "0x28abb5042fceec1bc82f49dfb698854b1c4117b785e1318e3eb48b478e1334dc66381b6f3da51e7e38a30f52e3bc0542b2b502164c038d04f6ac25f4872941871c",
    "signer": "0xc7159B67C2D17d8B4B593276f927dd32CB6Fb647",
    "userId": "241414615"
  }
}