{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "564715",
    "entityType": "User",
    "nonce": "0xb1b16cc7b927885f97195c0abb933ba4ffab0b113c3f9948b744ca550c2a29a8",
    "signature": "0xd836c3bffbd8e58450e40794e8044f2ea68d72939a89f133136f76dabb1b30885f80e4171f18fbcffb036bf84dff0bebace975f52e482dcf2d8d0b34a58ac5301b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}