{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "352644890",
    "entityType": "User",
    "nonce": "0xd0a50bb498065796731f9c1a8a88054f2bd431ffa189350801a6e87a4eaf4d50",
    "signature": "0x418c4a5c03a900e09692c6e61e0c2c7b62c50fef8bc38c047143fb63fb95d9547973b707c74980500ea2bfc3ab83e5c11276aa0a53b471f5b809c0cdc95619d01c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}