{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "248751",
    "entityType": "User",
    "nonce": "0x3c5c6199989dbb6bb7754bd27784a90ad8847de12b325f50c985925909b15171",
    "signature": "0x88ed22396beb92b83239cb9d21b81240660b39de11ba17de19c25f39aa34dbdb7a54a4c4d2d72c83c0944417a7b54e091b6f2363e436e62ddea5db6886d027f41b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}