{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x07b894fa8428bd238cba4322cd53cf2a84a2c95eea32f6d01495db95567ff5c3",
    "signature": "0x8469090936f3bc209ba6ac0d324f8d700eb358e0a86107ff8e07eb6f6137527416e6edebb5fc3996a8a1ec735d5cca8d7df80b4e8b6e6d4983a6ccf640bc61581c",
    "signer": "0x7E4f38Ca4666e7c43d1738c2aa45d877989Ef095",
    "userId": "881903658"
  }
}