{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "121018469",
    "entityType": "User",
    "nonce": "0x70d0e8798497694445ffdda63e1feab92b0fdcc68566ddbf4ea13fbfdb35777a",
    "signature": "0x5f0591999f8c320cfd8c519f5c07cceaec7ded65a4cf35b13946dac621354e02211020a13efcb21a4f87c6f7360972a196e2e53b5a11d908e542ab19b2ad99861b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}