{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x923028e14e2e5e90b635c499066f0a43464cb96d144a06618933e1b2f340cc49",
    "signature": "0x4f7ad4137b35a1e529be724cef07c3256ff76d6dec05383b1c393c534d28be887e1d8c91c21a08692007d8ba0c3012bf0b8dcf14a06962e69c5d3ed323eb74b21c",
    "signer": "0xA98fd93042137dcfC90267335A9677328f2cd3FF",
    "userId": "336593287"
  }
}