{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "744121762",
    "entityType": "User",
    "nonce": "0x8ec97d2e42d7423970f11bc43b000d9077904f0da960c738787fb9ece7db899f",
    "signature": "0x3af091634de0aa3e7c4d57bd3c98ed65d79a619f0896e981b5d2ff37a83e78e3626908e472f566b52d704562a8c80fc37f24dfc461314a9159035f048458d41d1c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}