{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "951995708",
    "entityType": "User",
    "nonce": "0xdb9eafe971491d8d03bc6e9cbf72aaf386328d3cd0e559e4c8781a842a334cf5",
    "signature": "0xee450272e1f63af90154597e26bbda6b5b4f92c024477b88377e073059f14b0d0025a2a37b6effa9018c63d20caf7c8ae72a2baf5c5a1206a6077f6e7b0314191c",
    "signer": "0x1F9dC682fadBAc94c0Dd4ca2232a3f490704a737",
    "userId": "737872723"
  }
}