{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "171637838",
    "entityType": "User",
    "nonce": "0xa639a34eda4f7589f1b5f569d8619f7978d114aaa059f86240ea03aa152109ff",
    "signature": "0xece2a383ce1c2a074bb2fd4ca8fa3c01449d2a33d336bb0992a2f6f861954a2b0b38a11e32cab54bccc4a86fc9dfb44467cfdad0b75cd872008a0effd310f6681c",
    "signer": "0x9765cbE8e26a2c6c4847C1B69ABeB0B5250EC254",
    "userId": "678556080"
  }
}