{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc291360e5263770d3734855a5dbe43d7c15d25a94b8a347b2f30f402dca36959",
    "signature": "0xcd3e3c9b7782e8e70561ea11b5f21d121d0767d472f01b74d259413eb40bbbc644397740853028d8ca2a4c52e0be3a7e4cb5db965c1f4dd8b37cad52ac11548e1b",
    "signer": "0xc30bAbF21Ad5EfdB081cA75Ed3e544c7C1102B52",
    "userId": "703514944"
  }
}