{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "121458",
    "entityType": "User",
    "nonce": "0x02173b8682b7c79ffd1e19aaa6ff8bf4e920c3de5724b3b73a7618ed9b9e1c37",
    "signature": "0xeda5a31c3ae51a5c87cf6b807175f231cad3bda2fc4426cb163fbe1f78f4ae875b10a70d547875fecee111c1e29071f580f190fabc49d135f3381105d7d719ef1c",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}