{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1898138",
    "entityType": "User",
    "nonce": "0x9bf55be3190741550f1ea88b36d8434bd292788a985778b23254d19e8b087f61",
    "signature": "0x344b56c02cdeb136c08282cafe2ff556551b727ace6f3d45370d09a53c5e40395e79fc230f83466ec1978c614041f2aaebc8782a6da2571754eca2a3ffe60eaa1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}