{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xcb9557e4f4ffa99b778947e11723ad1200c1c05535f85b3da9f7b0cec2522001",
    "signature": "0x78cb25f3a791283790ae344b2f030c07a860976e4fb8fe1667c36676ba23d9fe347befdddd5813e86e834f1828c213c8ef93a1a1f8a1d1a4b762b48e1ea54a281b",
    "signer": "0xEFAB3332CD5EA33e9817aa57B32CaCb8Acf973A4",
    "userId": "407216161"
  }
}