{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2739c0d0b053338e6493a953a1ce03c77ea9326bb1740b1be07ea55c2e809038",
    "signature": "0x0d75757366b0fb4ec4d9529026b44e4fe196bb6147935e5515bd2eafdde105820e528e7a161b01f8c41d94768ff313a1f3397f3e3f00c9f0c65a58ed068a0e0e1c",
    "signer": "0x5A2b21D1d4240B0d6eC130512D4b578aec735125",
    "userId": "862976792"
  }
}