{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "771694",
    "entityType": "User",
    "nonce": "0x935e612680f147c91440f22ee7d1243eef677052796cd18e221252951e8d4eaf",
    "signature": "0x971dc2ab4122c4ac0487c3753375d2abc6f392d86a419953d3d712a417eca35373b9a3b60611a1a0a59c108fab679884965966caf015dc2f64f7eba73ddd20a61b",
    "signer": "0x69f11622ae51A55c34462DAfaAa5b4E7e77AB644",
    "userId": "513195827"
  }
}