{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa306389f7147581fba042b2ff5fd44401816d2a5be5ffe5c70d95d66d84ade80",
    "signature": "0x48e549f7b0b69e533569fa45c6e3f3d963056821eec40ef29305861ca8c153a406034a1ca95d1a229a788ad21a2ad652e090d8dd53a16d9a4f086e812a4dc0811b",
    "signer": "0xebF123a3381552167d632a426876802d2d258D43",
    "userId": "739620943"
  }
}