{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "447798047",
    "entityType": "User",
    "nonce": "0xcffe0540be8f159bb4a171511c696a95c3687253f601dde024b0252da5d29a36",
    "signature": "0xbc2c6f231b4d7247be417b1ac49058edb4d25259d44ebbde900752ae1f83538f62ad63e73cb5061459c3f0924d4e40493fad76fc77fd0f031cca0318715ead9e1b",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}