{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "42216",
    "entityType": "User",
    "nonce": "0x8fd2090707547792498774859bcb66d9d45fc7c015ef32ccccef8375cf999609",
    "signature": "0x8210dec51fd422e1746a0d3ab2a607ccd5905b7c08068260b75cc9b4fbd31cbf000ec2f26fe95540c3913406b5c5f4f099063bc5525f2de73134386c5a305ad01c",
    "signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
    "userId": "670307808"
  }
}