{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "309080",
    "entityType": "User",
    "nonce": "0xeace06ba83e003add5707026ad93733802775f2d0417f0d5b869c60d60d61ea3",
    "signature": "0x37ad9cc3d8e7e9edcc3715a55965c37fd6321918927eadfaaf6f135a35ec95c152abaaf4e70bfbe2db7c81dbb6bcd8c0373aec77c475625c88ce96372b500d6d1b",
    "signer": "0x195d9eE11400245E841C02c4b4288a90A8195e91",
    "userId": "103785872"
  }
}