{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "580720856",
    "entityType": "User",
    "nonce": "0x6816ffaea9f56274f7fb0aa08b54d74cfc4df9d5908684bb7dd4ba2c1b4564c9",
    "signature": "0x8917b50a46477f9a83f9220ddc86e747fc7f3daadafdd8c0097c6f17e0799c65580de6be67953e29c75fc3e1e15869bf2fa31c6ffbabcdd87bd713537cc424db1b",
    "signer": "0x1A523ec8B21411C3F7d611FD345362ad54805b2d",
    "userId": "230518"
  }
}