{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "881446128",
    "entityType": "User",
    "nonce": "0x3f61b917453f9d5cdde611a9c3b5fd750e12e8aa38a7e6f6b34382874199103e",
    "signature": "0xa6061aa60490d54004a77978e200b4e19628c391e37a1839aa56a26b74e7bc132d704298f63ad4019962908dfbd75215d827b471bca987456f95a4de4531aa941c",
    "signer": "0x21370B7a703524cC2941323C2c960224021F8D56",
    "userId": "986168993"
  }
}