{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "485987672",
    "entityType": "User",
    "nonce": "0xea3dbd0388f8c95209ccacbb18aefeff83386006faf4e3e3ef2dbdc6a015aabb",
    "signature": "0x9cfa8a483f90452e1c38f2a1dbc8240b1255304225c309ddd0b74dd9fa10b67c08b268753a1d0c4e93aca9bac90f1ab16352a0184a88b745c4b156f2bee9c5f81b",
    "signer": "0xDDCce44d487ED1f7297d836241df35AAB6D867b0",
    "userId": "22610281"
  }
}