{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "299279",
    "entityType": "User",
    "nonce": "0x15b28fe10a3f43b25e37ec2756ba9689e80eb223c820712370070e84bd297c40",
    "signature": "0x40cb8b6d86b149f792bb6034f541de53a2de35cdb4eaf8b73a513bed97687ffa15242f701933e46617e70941433e5e744c906f0e2abf650ad63b00a0fda398e01b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}