{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "302440",
    "entityType": "User",
    "nonce": "0x579d856ee77639a1f80737bb58ee966fb82c79bd14e588ac2413462eac23c2ee",
    "signature": "0xb0979706f7f0fb2afd6092004c43bd825b8ca2fd838adcb8213c475ec4eed0d40a4b34f8f17a69ffb9588907749bbbde805f1245fb60b9a85eb9d811a9b265461b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}