{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "250711",
    "entityType": "User",
    "nonce": "0x4303303ae0754f342d6091531ba0667e13a56c9019aec3e254f7521c31388918",
    "signature": "0xb512f3a418fac525a1c84a1f5396c4bdece4b5a87631c94b7f29ff831ea3291a441ad3566b6044475f2c673f6187fdbfa7a27a9f3e9b78d2a406b772cb97461c1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}