{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "674249",
    "entityType": "User",
    "nonce": "0xabc9a92f2c95247f7faa9c07cea13e5028dda7d342bc9267629e28b037e3e698",
    "signature": "0xd17c637a66e4bb5406c868e8bd3aa49e3183641523e9c62b87caf200c7ec93f2377e8bd0b1d1e0ad0323d63b90ff7ab7224a6ffc62f8228b0b3038735242147b1b",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}