{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa5de2a60cc719f0508714a580afd477a975c1268757115e3c1456273f0b30338",
    "signature": "0x40bd8e6c049038872eddd6988224d6bfac3994c9f1890db9e5c0f2c3025608b2621fad8d81abbae878dceecfbcd4b8f4f279539d927c056a29bc30a5434e7a861b",
    "signer": "0xd07b5397D5479A6937AF36CeA9Cd643373053AA8",
    "userId": "83631752"
  }
}