{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x44d2542492a7687a91a34a78462a57ac6f79d2a809a24edd1239828b7a602671",
    "signature": "0xd5005fe64636031118b4ccf0f7eca6c730cb296e8d545991c9c5adbbf2ac7d3331526e6479dee6fbb21ee8894e9393c0ec9240bc905a4c7f4eb3a89ed54f845e1b",
    "signer": "0x1284F78d62f9A13dC8624E39015d4744C3102d1e",
    "userId": "903771005"
  }
}