{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "669480134",
    "entityType": "User",
    "nonce": "0x8c5f6055f48df054b49654a9bf2ed5a76aeabcf4cec712cc6a02e35cfd75475b",
    "signature": "0x913a7ad2d35c511fa78abab7f3359eacc893c947896f49ae48c0db6ba9377fbc2987faac8f4e422dac95180ada3f2202eabbe5430d2414ed6ed05a7e69eb20151b",
    "signer": "0xcF1BC458908F84936B19Ca8Cf67C751CD647B02b",
    "userId": "310796"
  }
}