{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "956403",
    "entityType": "User",
    "nonce": "0xda4dcc5c2235ae9e96eb1cecf3925b9894f5681aadfeab12313273ca2c87f6eb",
    "signature": "0xc00a488cd4905d9121d968ab7591059342fac3453a70d16034bd0e6ce094f65e29214506734249192f988c001f4d9bf20f8446125e08beb079b88c3d443843821b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}