{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "108203",
    "entityType": "User",
    "nonce": "0x75286c67bd5dcf0321b41deccdddb62a5ac33c340926f1060b6d161d2c60d491",
    "signature": "0x45ec1093737c77a4ca6a96caca04d1970831799af366ffec4a0408b45a30e9316013fab2468ad23b5bfd2f3183f1e6be2541a1c55fef6975739ab17a5dbbed951c",
    "signer": "0x7fdeEB144300AC6b1Be0E83d8f006b2D3140F73D",
    "userId": "325377357"
  }
}