{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "681230276",
    "entityType": "User",
    "nonce": "0xef29c325adecd3c4f2040a5b6fb82906375248ad9b42caf7dca8d4a517c1da47",
    "signature": "0xba0c5d30a2a9882b73256b427b8071d6f681d9372ecdd03de0e011fb3937b8741f03cef6a4014a5cd4ab55e5ccfbba0777b0108d0662cf863a1338b9e20f5f0d1c",
    "signer": "0xa24498458c4D424889FfEaE6EdB476c8E35C41BD",
    "userId": "787951188"
  }
}