{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1",
    "entityType": "User",
    "nonce": "0x0fae642eb5b1e9bdea5753fcf002dbf1df2009cb56702caba8073059895b177c",
    "signature": "0x990df76829361743c5d0876987504e25b5a449b9688a9d633484e6a7053f191b44e38bdd83cf18135b3b841a06f9fb9bfe080d9aeba29c9a1ea3d31ea1026dda1b",
    "signer": "0x53f39D73a2dd51E9e8A362EF3b1383072E37cf26",
    "userId": "74209883"
  }
}