{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "129445",
    "entityType": "User",
    "nonce": "0x556742c3cfc9aa41524bdd1ed2db2aa0e89dcabb9b5d73ee94f9f5c2a57772cf",
    "signature": "0x1137dd5940bd2923a6f4f83bd6e9af182e88c74d6cde76324cb1fb35ae6d58ba2c7f657b0f9787e1734496ab6d4d5608c736f53eb958927036b8081a7f7839851b",
    "signer": "0x4F8e40E75E675f5be20520c4cEA0CbD7bBb999B1",
    "userId": "991796067"
  }
}