{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1446722",
    "entityType": "User",
    "nonce": "0xc5adfde0d7eafe562aa312004ba07c512decc6b74c36d03d6c3d5642d71e3dda",
    "signature": "0xc909a9d3ccf76b5c84d3f03e7a89822f99a83bc217f7e9eed7c2fdb8b476ec7c1e28705a7573af043398e4ff0e5b3fc026029725a94c123eaa16bd54d1f30a851b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}