{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x590fb84458d6428da5313967aaa273cfc03eb66dc90f727700d6ec4ceb5acf2b",
    "signature": "0xf6680c7201ef56c11559af9983dcfc0c0660a47f066faace5256e5e5ce789f101472626ffadbc8e920411e446efb1d9915aa645d6bafd4c30d27da826f6b80c41b",
    "signer": "0x7FEF5d952f7FB3EF06D25Ea2084E4DFA08550aa0",
    "userId": "273948816"
  }
}