{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "499895630",
    "entityType": "User",
    "nonce": "0x18d0f12c11655f0aedb575f4959b708478bcf558fdf532a849b4c3579b9943a0",
    "signature": "0xdcd7c0006fc8c83854a66dadc19bbcb4e4237b4b7ba2614c30d95ca50b3c724a5dfb1a2584240e58d7ba5934a0b3780a2ba7e127aaa1faec90d935317853cc4a1c",
    "signer": "0xDfAC0702040EaBd2d42e773014D4b014C0747D9c",
    "userId": "707937"
  }
}