{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "354908",
    "entityType": "User",
    "nonce": "0x7b9df529408b2820be7d008ace210bc7a32628e7440d60d182f3f782d11174bc",
    "signature": "0xeba0d625aa432d19280eb98314b28e7211690d12db27ec1acd03262a4cf02f140cfc84d40b262f788390e625aada63d522a30258aa29c5770495ad0d900a87ab1b",
    "signer": "0x61199b8585EAD466608693F9Bf340BaF891579fd",
    "userId": "117568"
  }
}