{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2fcf65fcf08f96fea359e650471361a04b9e2eedb169a20061b97c0fbc7b4040",
    "signature": "0xa74ee604c6cb3a9932134fa655c7edd3e26d64ddcd658a2a7dfa1bb1e58430df37b084052e4a480d8b43727a4087762b52bf2c6f6a0909a45dd1326deef9bffb1b",
    "signer": "0xb3168719A9181aDe0746f0F52D94015614eF5577",
    "userId": "409178654"
  }
}