{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "719574078",
    "entityType": "User",
    "nonce": "0x12794fd91798da74a12806fab429407be757bfdfe00c58b76a21eac718b235e4",
    "signature": "0xe2008a085e34ca36e2ec741238b480020fed6c55a4690fab47a8be6fd862777c6c65968c3d83c8097c6ac95cb1151d71b8fec05af8dea9ee97a14d8324d08cc71b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}