{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "341",
    "entityType": "User",
    "nonce": "0xd0abc68846f966099f16935c1b129e5597a0b078cab0d4b484af95465136a39d",
    "signature": "0x1f727026d692bc28211c613a8f70eaada3c12699ed70c72d2ed8bf0567fa0d7f6873f390eead8e8c6414f6f077c8f85478ca5ab80d0824c8af741fd301dde31b1b",
    "signer": "0xE7A4a8f1d081B44C96Ed68610B6c3016ce8cD6E0",
    "userId": "464427506"
  }
}