{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4a5b41fade5eef1db16ddb1a3e876743441b5cd238605ee7347cc595eeec7e37",
    "signature": "0x76d299e2e24714792be99cfae38c9f83589643fa62aca8bf83c7a5c8cea59b057bd30bbfaa40807afee2c0b27facaddc5a7331acdf42240731bc66a5488b99311b",
    "signer": "0xF901Db5E0FC0ac25E646eAd1227DEE7C64F47Cd3",
    "userId": "120382441"
  }
}