{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "50672",
    "entityType": "User",
    "nonce": "0x2398cfff1e87951429459cf4dfa245b90fbb48302f9026e0915bc1550ce60bcc",
    "signature": "0x83b97e88955803a51584d65c3d2dc519a3e5b3e1d90de6fc0e6c2d68a240176f0d97a7810e07f19f41fbedde883153580b9dcdd45faf114e6554e287326dc3761c",
    "signer": "0xc97A6025Ad8c7Ba1a35Ef7E3A3b88ABc8b2013BF",
    "userId": "666092734"
  }
}