{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x19f2e490a284a2270d2e49ad8620ab799e40be7293b17a6e1b931f955d950d3f",
    "signature": "0xbe26acceba4df1b8dbe39cce1cec33eb44cddcc48941cad2c299a05a1f58fa565473d257203aafaf9a0504c1f3936ac16f5d262367b9fad2ebb3e2ad80a37bd61b",
    "signer": "0x50136bc73d708Fb19Aab7302A3b581BbD644CaE7",
    "userId": "776994971"
  }
}