{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc96e4d4011d5c366507e993bb0e12d589881e9bd552c1bbe5344c5839e4f348c",
    "signature": "0x3b3f23ae2d31bebfbf33215da4c7aa338985f4ce172b6d2c99b77b092d73b48f0af29854bc76b005609edd84d9ed673a694b7ad98059f09e30a38592701d19691b",
    "signer": "0xb451D8056c78ab09F2fc77592649c3cc305ac8e7",
    "userId": "757517997"
  }
}