{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "672729",
    "entityType": "User",
    "nonce": "0x5eef377db95435df0c9fed7541470d80f273c301b137947c7a016283e6c8a141",
    "signature": "0x4790f573f76f01b21f1facbb7c6afc86b8076a2819f08ccb25eb60186938ea79058bf725d9349ec8391303544b8c36b663825217565d142b758b9ded5e4a56bf1b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}