{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "753303354",
    "entityType": "User",
    "nonce": "0x10fda0e696bf27c6739fd9b6b98cc3e7b07b3d2686c285ecf158ec6f4695a278",
    "signature": "0x0506af2c1819a0244b86f7e23e01e9e5333354f7553bab4be3afb1d3c86ca62336c0e26c9997129bb1de9e0beb25522cc44246b51f8ea66fc41a0bc09a126b841b",
    "signer": "0xEB82b0B3E0C8Ca35edDe7c7AE5940999f64e5493",
    "userId": "2021159"
  }
}