{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1450501",
    "entityType": "User",
    "nonce": "0xb99d830a777a55ab4aa5bdfeb167b59724d34ad8c76e3dd8ced6af2799a79498",
    "signature": "0x27968d18dc26c032e729941496a066a77bd1cfd58eb72d75e9f8ec827246c8af4c455f34e743de95189a25b9b6ebeb45f10b4107540c98c0888a1f651a9caa8b1b",
    "signer": "0x849ff9BA1AB2a3d37b1388f2b207aea59DACCaB6",
    "userId": "901768902"
  }
}