{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0x13769db58932fd03b0715a348d23521421d86e8063e5ef945d4efa7060515235",
    "signature": "0x72ad36132f058912330f6dbd319da3e6fc52430c0ab2e6c866e987b53f6f1d73271c26d36407c78d395ffb8bc634e52c1153108577634dada8ad3fe41bf6fce01c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}