{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "620307004",
    "entityType": "User",
    "nonce": "0x2353d71397bd71c00aaeb7f1e6d827f70b24ac6e2713a0e1471f6798827cd2ae",
    "signature": "0xc1a694a495e22534c27451dbe1c6b9886f7423215de0158dad62bd42fa5f798801ede339c50ca4f1475874692c3ec30d03ef9710c2e9426a6ef6928356d8ef121c",
    "signer": "0xaE8f01E1365fF40Fc050967a35634F857650c83f",
    "userId": "814483459"
  }
}