{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4097a8b61259d0c69ae8f79a57575278c5d679f5cdb74f6a316b5fb852cf490b",
    "signature": "0x76003e84e3681f966cf2e71deb4612ccd99250c99d51d38a18f1c6a4c019d71153431bfc480bb081bc782ea561d21ce8072b79d8e14613699d46a5f3efd9ea3e1b",
    "signer": "0xAb16CC1397c4cAd2402585a2bB8b7B7Aa3a1e997",
    "userId": "792205408"
  }
}