{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "221875563",
    "entityType": "User",
    "nonce": "0x964fdabde77ad3c058a11aecf9059c270cf55fa990d51f7f2588708a78cc2716",
    "signature": "0x9c1b91c447ad9506d28cbdb2294f66a93fc0953d451cad846668b9aacc15c8c1485989f49679d0d373a835619e883502227512979b5d54957e1a5ed15c8b37861b",
    "signer": "0x0d0E0D19797534AEF52736C60B52793E9f88e24F",
    "userId": "603294620"
  }
}