{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf98980a09e1f75e883882dd7c0fad11d5bd6118ba83e20a12fa1306b645affb8",
    "signature": "0x78eeedffa1f1ac89cafcdc36166d6346ec3bd82108af30e6cd0a4bcae384f7f67dc8a25bb771de1d4554bbd1012947b289ec454d05e4e963fbdbc6fcb84e8b2b1b",
    "signer": "0x567AE8cA65dCCce4A528007AA2BC8E38cA94ffBa",
    "userId": "707341357"
  }
}