{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xbd4278e289490ef35b653bd18e86b21b83fd436cd2c7d3b4cf9340cae091ae18",
    "signature": "0xd389e4756b25b4a3fdcb6670213421774eced8f06561ee84a1d5a316adddd0237eb6ae50a45d93f92d5652a3577053e060e5755ba60e911be53bf22818c03da51b",
    "signer": "0xC0f8D2C092ae50e1512d827eBeb817e1ea4112E0",
    "userId": "451729998"
  }
}