{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "648443373",
    "entityType": "User",
    "nonce": "0x6916b0a5b933dd034cd873533b062c6909c276af600fe9e6e8096ba3764f8e37",
    "signature": "0x14ec0c71dd47c42f2b6692498be0a792d815bfcc14c7009830b167e7c8f2209954c2caf1e2fc19b07752b6e6f00f25745b1370383f3a34908f105a896ebcd64c1c",
    "signer": "0x14fa63A530B7d9254d20B110AAc25ABF49fbfa9d",
    "userId": "182428"
  }
}