{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9ac2bdfd81f6a5ecee02d3c6dd6c7c9032cb62ed980386e8fde8593a86231e69",
    "signature": "0xc0fa30c127535f346e1ece8d1f0394b65aec9ab7ab3fb25e0b1ea1cf5eb3036d542e287cb916caed8ef9c5a64c4c7c0f4dcce44bff502e284034a1cb7f02c79b1b",
    "signer": "0xfC070d9d02c152146e3D1B2cD4B03FD7a3CA1AB0",
    "userId": "539537193"
  }
}