{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "195138",
    "entityType": "User",
    "nonce": "0x9871d40d340b1b2645a0e347161c65dea67edeb8ce189b0f9429709d1ac48583",
    "signature": "0x607608bba2aa25422f6abc5ba6cc6fd91ea87019b2599c70b488b2c633fc36850ed4ee7a16df36fb2f1ed144fea3ac1245a64a6794b542a66bf9055455760a781c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}