{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "294909311",
    "entityType": "User",
    "nonce": "0x0475a42fed74afe938a1977f8e06e7ef42d8db241eeb1ee351cec6421c14240a",
    "signature": "0xefb5c5630b7ecc1094f8fda034888f87815077f69ef0139f4ba26d0a65a7e5e01d6ddefebe41719ed2e971c901471dc7cc976e9a98488841dee96741e840ff071c",
    "signer": "0x90A9ad55aae6A3ac7D73EB5114a90ac9AEB777F7",
    "userId": "815799751"
  }
}