{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "624702375",
    "entityType": "User",
    "nonce": "0x93b71f9dcc5c1549e0c599473e6216225ced321018b349a795ca1fb9c69aab90",
    "signature": "0x1ac4527b85b152cb9f03747127ed385f88bf91a7318e0e8f67127a75cd3c68e3330b204516e4b72ce119116b9305bb28cdfadd09534b110f1253abb0893503a31c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}