{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "16497",
    "entityType": "User",
    "nonce": "0xd8b4efe7072f3a1b7a18c90f831bdf5ad21c4611d228bdf1d4d7879976320873",
    "signature": "0xc10eb3914de0611072a19b7ea535ba43e4fd5978642542fa4cf228549bb34e933a3478bc02ecc74164c3ce921c542c6558f399e656c242bfa6af91cc830da55f1c",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}