{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "998142836",
    "entityType": "User",
    "nonce": "0xe41b20ab867c66e62cdf63019638ff29420f62dea4dc8331aa8cbfe8d6e6a126",
    "signature": "0x70bc3ac41b80ea3580981280a1439f451263bfaea59c8adfe7c8c4f0cdbc8f2608db87bb9554dda0b25c4ffdde328ed22892102d2ec254bff055dc9cf3cf1ee01b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}