{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "724379",
    "entityType": "User",
    "nonce": "0x7761ea54083ccfa2d26c589a76e4becde74566dd7ea7329aafc20d1ed64f948b",
    "signature": "0x63120ac5f1587c94cf9983be46df35584e3ee45545c3985102c2b7d4f4b6e43414e533c7512611a7331ca430926af99684d8e121c6de96e1071d89e41f2338e71c",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}