{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe0270e053d8e1947b7f09fa98be514735a92c05effb8ab50e6c897f3328933bb",
    "signature": "0x3d7cb49d559c152e15235e796adca98f31f28651d655f50cb230137a78c01e3213d2f42b9626daf13d849e889b3bc3c2245910c5c90f0a2b66196079765100ac1b",
    "signer": "0x991186d580C3DEdA72eA542e6165B9F1f772a240",
    "userId": "683287603"
  }
}