{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "81899771",
    "entityType": "User",
    "nonce": "0xe9c8b9a999ff6e437a1e7bef1a570459d4d25d3586d843d447e1d6c2b3b20405",
    "signature": "0xf37781b9f83377d348e1059805324c1b0b2c62ee61c89e24870b806832b93d144219944fc907b43aa8760493564297c567756c7d5b2043b6f31ccc3f49fea9c61b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}