{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "394450",
    "entityType": "User",
    "nonce": "0x0b3a780737b37fea1d1280f6583d53d9d3748655dd8bc8a8418992bb3e028d09",
    "signature": "0x5dbef605f5bb6442cd06582dcd830696259a0dfafeda5b8a13a42ad759cc0d5463e1e902c106c097960fc25b9b281d1e1174d0698d516e82e2915f2285505ac41b",
    "signer": "0x57Ad6E2E3fFc5ABe9b5FE7DC3bF7c07c8cCf9Ccf",
    "userId": "571702334"
  }
}