{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "777",
    "entityType": "User",
    "nonce": "0x80d3e9bdfb8129fafd832de9b1202194407430c9deba8ca71d18aee1443d75c7",
    "signature": "0x7a8c0cced8d709e105ed15fc293a7ff6b2e37629cc9ca88e1107034a62f4cd7b4cf132b8452258ec42474a7e78dc983db2ed58b934004decd4a38b1aa58635111b",
    "signer": "0x7C11b4fD8bBc86fA62E60e5f748473a64cD733f9",
    "userId": "63522342"
  }
}