{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190321",
    "entityType": "User",
    "nonce": "0x752cdb33aa32b386249f906418b5bd7716457b2bdb4e34762f22cb6ddc7175d2",
    "signature": "0xc37857326393ce64a6d976cbf052ceca24a0bc2772bfc7a8bb2ba8009a80076504a869d18e9a4fa6d3bc2a9d600662bfd9f70360e3e56ce2ca3523c5d3f1e5941c",
    "signer": "0x2ACda02e37Db2DC08f82aEFAB268F0610974bb3c",
    "userId": "416239376"
  }
}