{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "137120",
    "entityType": "User",
    "nonce": "0x32389fbf40141200dc0a7d8f958a1b8272fbeb9fb00b2b7ee2c7119d20c8acdf",
    "signature": "0xf9c7dbddb81679e0e6ac1f6f1b8e34af95de0e7f39ac73faa7cc1edbeda8cbb6541d19b9353e3d5783222767b51c4f9edd31d7d607b1ab15517e6b7bf7d8054c1c",
    "signer": "0xdEc12eC3F7972dB51907501aF18eb17FBa37a413",
    "userId": "211416595"
  }
}