{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "309421",
    "entityType": "User",
    "nonce": "0x42970cb822b23de6b0eee1a144f21d727bf25412c7bb6adda1fbe45bdc5c3988",
    "signature": "0x9d4f5937a259472be8f867d4b7d9aca4009d55e57f1bea925d3bd8df4960bd89191d4d77e0a8d4d2cd588677db5c3ab16331eeb19a421d1886eb08fa6306873f1c",
    "signer": "0x48ECe992edB7C739B36f37DDbE8Fe352996B5A56",
    "userId": "183063753"
  }
}