{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc2263de6a13ee4a0ebe48962f4100fda3751631112c24648c9483fab0d5a71d7",
    "signature": "0xea44a4d8cf3b9245768b79aeee8d8e5a0fe41b9296ca29e47a0befbf9ce61ea556520c6b6e6450e2c4b539c9c4b695ee14bf82d91fb5384d9f4a74c67850d4c71c",
    "signer": "0x989faEfE658E0b6dF1793197b0De4137Cb1aDD3b",
    "userId": "554920508"
  }
}