{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "680400438",
    "entityType": "User",
    "nonce": "0xfaf6fab68a3dad71a7c4d21c52cc342549cf8fcea969cbc0a3972e30dc69bdfb",
    "signature": "0xb5021d5760db755021889f915b9158aef7c8dcaa1d2b61266f9006e961e7f3935cc514b475abbed6fbfcec0ffd1bf8f71a5b376b4486239c19d9b26e559ea8c01c",
    "signer": "0x018849A3d6594093B7646022836BaaDF36aA36Ad",
    "userId": "702391481"
  }
}