{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "423422344",
    "entityType": "User",
    "nonce": "0xc97d5694df88cae476a8d0b1a8972083abad608b8f3c043b3054510c67d011e1",
    "signature": "0xe319ae5494b53fb81b96232a30c57b5f677faaef36a257e532edc4d5ff9f8f652fc54742e61d4f7981c3971267b40696b15b46bc8695124f1a1cb48a5579af4f1b",
    "signer": "0xFa074f848Ca977aCBc270CBbfd4c375c210eB1cA",
    "userId": "939103135"
  }
}