{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2749",
    "entityType": "User",
    "nonce": "0x5882e35bf7cd71eeee2a3ff51403094ba83a38ecb28b22994dc64bc5f83bd77f",
    "signature": "0x956e4362ed637bc6f53c27cd735728df5f9d0e65980f34ff9c181f1b2074759c6541734e83067f6dbf31faaeb6600444c2c269d7a66a813d6735b834e9b127441c",
    "signer": "0x4D8EDeF47b57f98c89BDFf851267B0327BE4cD05",
    "userId": "5307724"
  }
}