{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "317620",
    "entityType": "User",
    "nonce": "0x520474571cb383e1c6b9f87975f3cd23f5ff747096f2980cf9d3137172b2e70d",
    "signature": "0xa1e431b137ed17957f8697ad0a66b02e980f42d5be8740342b131bbaffd2c8010c3c5fb752f7bfd7e7ddf5ab7b72e202a4882e0d3de2b736910f8bfa5cfedd781c",
    "signer": "0xDfAC0702040EaBd2d42e773014D4b014C0747D9c",
    "userId": "707937"
  }
}