{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x370f6d1f8e0ddbdc9191541a56ec3c0e975b85e4a87581eb49a04d6b828ca33c",
    "signature": "0x8584621c965f906f1fa961aea89bd4764b7b75bf53207b1b0843a433272dd9a22f5992566d271eef6ad2bef64e9429ef495c39ed681c1a1f11b58f581ebf97cc1b",
    "signer": "0x3e31c0900E5b08014B60BF74284B04565C9844DB",
    "userId": "60841394"
  }
}