{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xab27010093f0a97dacb05b86141a530c5c3eee04ff9d20ca931266f69293285f",
    "signature": "0x9ddaaa412de5b7dd4bd3b01fc914ad9209ef0248d580ba93f7b516ea9be375d4415dd9a4037d5879f48e0aed7959e2bfcd9e679b8693105eed1114067689a9dc1b",
    "signer": "0xa5b9d7881cf302eBf6c02EA48515280652580202",
    "userId": "871664400"
  }
}