{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "773501378",
    "entityType": "User",
    "nonce": "0x881b57e2805adc87675d1e6474af6565249f8a25c7a815a8fb782a61e6270351",
    "signature": "0x208bd4ee57826807190f63dd9abd7749d820d34326b1a6575dcd4aba5863b0cb635b0e8c4f28bb4850590e8fa0c55431afdaa76992383aaa2bde6ee1b7a824ec1b",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}