{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "502409808",
    "entityType": "User",
    "nonce": "0x9898f6facafbb302a4e222c3808f1f7fbd3240a2051ba24264d8e86e0eca5897",
    "signature": "0xe35dc84ee839be2fa23c2d0b0eb215f5f0f2fceae654cad6b00469877c888bd75a0bc069cf9b4e690ff603006956371ab025b7098141f9f96113bebf29a6c4a71c",
    "signer": "0x4de20759aa034CE2Fc4d9a99C64dd86906845908",
    "userId": "30809601"
  }
}