{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "213697089",
    "entityType": "User",
    "nonce": "0x8291ac7b45790c712af97821f24265b0bca9a069c94f1409b36682452d3d744b",
    "signature": "0x3c7387d2ae2c3ce94fcc6f27ef0bfd5c11d56940061a987a2d99751b93e6e0b803a8aa710b53a53e8a79358dcdc36230439c2b77cc4b45d2899a1a2e775ea5eb1b",
    "signer": "0xAfE04b3A47505816aD72A3036422AC553C1dFEc3",
    "userId": "515307498"
  }
}