{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3f3efd212dace78494de60b1e87943ac1551f94e53f3f39da7bd731e25376f29",
    "signature": "0x4fa1b588efbb1095568e3c5058e4d904fedf4175f17e2e2f3180442f7d93c52b45b248511cbc1cca6b7798ccfca2fb4c86c1413f826c78da0d2c718a87d34ee11b",
    "signer": "0x49aCa476D46A8DeCd8789B82a5E5c05d36dF4FdE",
    "userId": "305528134"
  }
}