{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "410109294",
    "entityType": "User",
    "nonce": "0x99459ef5ca71409c581e9824a90a107c577a707ad9207ce954296a825c6130de",
    "signature": "0xda95d2402aebd8e6a4c9c07cd6b4654804ac4f7620d9ccd310292f42595c65504bccb478dbf2e2a1ef9474e50ca16d75e0194c4b608d3728f82894c546fd3fe51b",
    "signer": "0x12EaF77464824447aA995e75Dd707B3e5246be9C",
    "userId": "409175645"
  }
}