{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9704bb5cc1b54896971762d252a5e0e1281eb09034569b41dbd36a3138b2d57b",
    "signature": "0x04f60604699e69d1ca97216fcbd2145b1549a2673344006aaed38a96541aab2c580dbe430dca46394b7bf770a78e8b292fe5b11b2106674764eb325eca8c94c41b",
    "signer": "0x674FFC02F71bdD4bD3Ae60c618579EBDD541E397",
    "userId": "787787230"
  }
}