{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "373169",
    "entityType": "User",
    "nonce": "0xd339f867ba3c50ba4fd98dd098b264766ca92fd3ea93d7491dd3a5df7c5de0a2",
    "signature": "0x3ac48a94226d0913383765e426c48c133a2e28b8c287158a88a42d350218c25d6a0bb47f1568b4a6cc6cb15477307ec4200bd94c10752a5ee63751e6acb766501c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}