{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "843",
    "entityType": "User",
    "nonce": "0xa8a261c65cb46188361c7b1ebfa65e7de995317ccc35905478a765fb3b5fc213",
    "signature": "0xb1f0d520b2bf8eaeb0400d8c6894d7255dbd057c69227c7ecceb9be46045b1497838f4e0051bea0cb2136e24deb8b1f59a11954fdb173980f602e869dd026d341b",
    "signer": "0xBC4Ece205cb3daC81F63fb3f7A9a16234fC803dF",
    "userId": "418692997"
  }
}