{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "546368840",
    "entityType": "User",
    "nonce": "0xf7e6b9703e4c037132c2b68153985ea692f081a28fddfcc5aabfa181817ad721",
    "signature": "0x76a56b484796d39cecf729e2eb32bb0ce5f5ca0766040e59dcf3449f5cf6e01239f6c116cdb367afa04d05ff3d3ff9ac3b88c4937c71119303decdc0076a59ab1b",
    "signer": "0x3256Bd2D0B1984E7df4FA525017aD9bA48470760",
    "userId": "51"
  }
}