{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "617699",
    "entityType": "User",
    "nonce": "0x9cddc466394cd88d657e1243b4a9783448d600b312448c8bb692cd3a764b97b2",
    "signature": "0x29c153a39d938615567471d54d94252298de8e2f7c70165b14ac018d701b66294a014b86b0998282798e2f1feb2b8d56fd0f8f05eecba95df02dfbbee19ad8591c",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}