{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "683609933",
    "entityType": "User",
    "nonce": "0x3c2b485e7d920e749547b0bfe1d2866b9fcd2c7953133b8458b7cfa5eaa217f3",
    "signature": "0x046fec3c79e58e12a2682f211719928c5a14c768d2d0b009cd0f12d5813cab641243f208867002d8003f08a69306b866b83e38a07baafc0623e820ff272877091b",
    "signer": "0xb7cfC3e8ADEA33d90F4f4B34f672a1C391955768",
    "userId": "120328"
  }
}