{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "728570067",
    "entityType": "User",
    "nonce": "0x284f30e1e03ac1203cb36b291a0fe123cf498b5067f962e50de75d32baf19338",
    "signature": "0x01df32f9fd3f6fa0733b2a5bf17fbe73c9d4513d09dcc05e6413ffbda38cbd6b44fd4cc51e51c887fc22ceb0bae7485a78259ccf62648aae0ea93d02e8106e851c",
    "signer": "0xf92f540BbaCd010681Ba15a2bD61973e3BD97b74",
    "userId": "388569291"
  }
}