{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x10e261079adcf2c8b1544e643593a5d132da88c8886ff7d1458ff4e9820b1fc2",
    "signature": "0xe30e7b782cc07a1a59003f84e4159994071e828620e42dfc9d6f43ba915c30631f143b6507fc28cae9fe8da894a92598c8186ede6ff319da2f8361799386ce1c1c",
    "signer": "0xc64D6434B63EB241973d495478c00bc588809769",
    "userId": "988788639"
  }
}