{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "881446128",
    "entityType": "User",
    "nonce": "0xb2ef0b18979da76b933836582eb3f0c08112fde410be7f6473ef57addaaa9961",
    "signature": "0x219cf51a9ef6b6a519e9fbe50b4d54b95f956c23435cd2e4e1e01f1347f4f13673cc0d26f56284e5a043b587aa85e5deee1824b5123e9a3f41734fa7288ddba21c",
    "signer": "0x0d0E0D19797534AEF52736C60B52793E9f88e24F",
    "userId": "603294620"
  }
}