{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4efb7a8fb2cd5883fce31b76a2d3c4bce295f8dd8b5dbc0d2a923c6da17eb6cd",
    "signature": "0xacc9d66289c4bff4e3e2854fe43240821a3ab8691dc1018e43c897707686b7da49a68e44197680ec14651af55f4da4e20f97c2e3e0fb027a2c897494a1a399e41b",
    "signer": "0x0C7E3dcDA8c6b4b66f9C89A3f95b52b70E44ea68",
    "userId": "783269552"
  }
}