{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "683609933",
    "entityType": "User",
    "nonce": "0x2df123ca073d0da54984e2defda5806bfd75ec54fa30468b55155a2f6ec3c323",
    "signature": "0xc727ae3ca323c9e375f1a4c4841797e1661df2f7d50ef3fbe0999931d8ab16233ced417164cdd6d38602c139898bab957920aa715e5c7987ff2e9ffb8b5003361b",
    "signer": "0xF300c20BDBB459E009c4E55c08CFd33E12f8B0Cb",
    "userId": "782218508"
  }
}