{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x454ffd7f8d80f29d886142e97ebbe98da27bf661bab3d3b5b465cd57f38d6bed",
    "signature": "0x6466b8756a5bfc830a9d17f52fa9cf8b25bd75ac5bf2e240d09947c9c99a1be23106529e7e9f1f626941c9f205e4f5f6eb4fda28734b574d3c4bb5038659b0bb1b",
    "signer": "0x89e7FFf4B1ABeaEA5da469dA775a30CC9a039C68",
    "userId": "335615768"
  }
}