{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "348740",
    "entityType": "User",
    "nonce": "0xc779b7a91b4d2e430e5c43bdd2f39d4dbb83e5c28d4466e1c36e9ca0d7764b61",
    "signature": "0xf92faebc8f27f795d91cb5f843cdbd53805fe636467cfa2dec0c54c8bcb5830751fa5a23a0b3b40e5392c45dab70afe43e899ee0f239caa28644d889c85c5a9a1c",
    "signer": "0x7eBAab495a64FAea1f04dc59ff804bf939da7B12",
    "userId": "709077025"
  }
}