{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf28470e3c7263ca0e63048ae8b4dc071abeeb5e2765016642a4da99d4f41abd1",
    "signature": "0x404391c537734e673a88596ab4f3c661b3f1e61f97b7ec7dd1aded2ea61a80546c1c54a122df8361a5eaeedb78ddcb41ebc53a9c972168d10c21c3e0452de7ec1c",
    "signer": "0x0F708706D87751dBF5c42C01768c900d16f52093",
    "userId": "444736508"
  }
}