{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "28155",
    "entityType": "User",
    "nonce": "0x9d9bd00c25c34299e5cfca927a2bda8ac69a0ce5a3f427afb817a969ea4473c7",
    "signature": "0xcc860cd2c35b9dd151b81ed771eabe224ad999e03d062a0bfa9655f83ea7369f682f75dedfb2fcafe353fc3d66335f0e2c1dafbb798047640bf67c03ad1a35171c",
    "signer": "0x15B9643abE09bd37C52a5BD1dCF938B05b06cBFB",
    "userId": "370091516"
  }
}