{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0757a5d887a7ca2ae7d8e5783a82f4cc0bfd418989f253a935136dcffe3d5fc8",
    "signature": "0x1321a33271affcb1235928f4c3e9eb78f7cd8df529df4dc174f346c1485d00205a026830c062e1855167717282c0ee6293884e6f9fdd15228bbff7c809288e2c1b",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}