{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "980916",
    "entityType": "User",
    "nonce": "0x378ef6300e20fa1cd11a62d76fc82078e6e02d9aba432dc5b611c19dab7470a6",
    "signature": "0x1929fcc8c97cf1adeae62a7fdea2cb62a4a8d9ecc451d52d2c44a9d6b7d68be435acaaa9c21f724344c444fb47c3dc49ebcc2fc1662df90ac3965e494e4161af1b",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}