{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x670c6bdf4c50dbd1295952162e263a8d8101cc4942f4e0b6146ba3e3b7083ddd",
    "signature": "0xdcb7b5d8c0b7a74550abb9c6a1dfbb46d3a8ddd3abc26e0566f6e48066f8358436335b1c00b2ff29dfbc1f106d5aed80e47cb92b4d6907fd3717e2cab343a8771c",
    "signer": "0xc0d1b6f997F346E0291eDa5a82ffC8D9d704FC21",
    "userId": "292524943"
  }
}