{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3",
    "entityType": "User",
    "nonce": "0x6aa5e5cda4b9c274d853bfe35f33aba7ded9b41d87cf3e0f2754501cf56ae92b",
    "signature": "0xb81acee98730b0d28321a3d92729ac4af790a941c8bac6d9aaa0d12cd294c0ed0886b2092bce56b4693cc1b60c21b9ad6ad0fc9c557832ec2f8371d23c03bcb31b",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}