{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "390935",
    "entityType": "User",
    "nonce": "0x534c4ee304e505f50c1125cc3d044233c33249c1375977d9cc6359dcfaf65dbf",
    "signature": "0xde4067b21f901aa53d71a6f1ef6c4cb501ddb82ec2507f2dd0316993e4296faf70c94244e28d63ed22396907ed25eecab6850f4f577e4adfab353a95c5c485e51c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}