{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xbe9884b46bc76f734efe217ee257b8a892773ffe0eb092085e1d98c445de7226",
    "signature": "0xd772b7e5e715e1eacda8ef45dd514ee8174241c5d3476719705d8d5175cd9a42534b9dfe4a42b6d80b445a2b0af9195b9487e8afbfafdba7ddda5671df3b1b3e1c",
    "signer": "0xa5673DbC5E23B4DF63BB330C1fD911F347713510",
    "userId": "536123760"
  }
}