{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "580720856",
    "entityType": "User",
    "nonce": "0xc65e21fc0944702119b6d1f129572257e91faa7c160c42fcd06a72cb1b44c74b",
    "signature": "0xb0c4141dc67034386e0c12079a90bc186005b504d5cb7fab8b4c1da42683057f126b54cd643ec89a06f8c31fa0c656c966162719548571174b12445427a3a44f1b",
    "signer": "0xb45E373C4CC69Da16074cD59ad14c38dc56bA653",
    "userId": "624050891"
  }
}