{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd7477c07855f173abb7133d894d087c003e14543c1b8b7bf6d4bd49401213046",
    "signature": "0x6a65757815076e93a85a86650186920a7e45108ea54fce775d1a573a4b6940f35d0b2c23359e2abea01c510b3b6fb91e3bb18c4a375e63f74276e620e2a45d4f1c",
    "signer": "0x9a2123e4f1f72df43f9a2EE66626bFDDEc0cd836",
    "userId": "36647701"
  }
}