{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "758745",
    "entityType": "User",
    "nonce": "0x56ef0c5ba55028ba9b59238c9de29e8ca96c16f8d953c9befa34a71e19df7bdf",
    "signature": "0xe6105eaefbf41d1d687dd42f6fe75c679920402d80407586add3e74be14aa6f8178763d4906dac88a48cd8cffe0a27358ae3836f9a4ecfd01649309bdbcb76d31c",
    "signer": "0xC90e14007305577f04e5F4f5542B2191bB2c7394",
    "userId": "1856608"
  }
}