{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "341801",
    "entityType": "User",
    "nonce": "0x97d49bfc4f49e0198d3d0526dc652624f503b46c52f0864f7f79347600bfe4ef",
    "signature": "0xebc49240c1fa6fbd81e44ce64837a314f0463db56f787a670d56d13cea44799c6f5413527f1eb03d541a4849af855210e370d39eb8548a0177d4a3427a063dc41b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}