{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x91630045219911446b7510827a34425df1806e595e7b436cdf41477f67ac876e",
    "signature": "0xcda3e1504d8561cccea797734ffc7b211d2663bd8f3ae97d7d4993763d6542483e432f40d5d930f53f31f6ede62e809c49286c720f01fe0ca4a6865a9f205ed61c",
    "signer": "0x1A99bcEb1277f1d90Ffa77B2c480Ca93a4a4ebC4",
    "userId": "852344394"
  }
}