{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "21894",
    "entityType": "User",
    "nonce": "0x246b59667af12b7411ab3f666e8ba1a37a7cc2563d190a4267083e9e0ccf2f3a",
    "signature": "0x193951fa7bb2481e7c7e9bab94c48e45b75762b17509fc719b1fb653a9a72e206686de70bdd1ef92692fb295b3243fd1adde19a2439352819de887785491fc9d1b",
    "signer": "0x64380653367e8F88e5E42a419Efd0927649Aa2b6",
    "userId": "383201892"
  }
}