{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "887242445",
    "entityType": "User",
    "nonce": "0x96054159026e83b689d6aa5a5213b241ac64a0bc136efaf06f14921ae6b642bc",
    "signature": "0xa4adb08d493233151f9e7bcad5d4d07a272b180675de17f206037f0d90fbb58b3cadc9fc7efc57b801ecfb3dbf32086c8372d88341e558d7b1d79be0fb0f75b21c",
    "signer": "0x4D1242D0da3f49195E59794290Cbfd833cCD04FF",
    "userId": "627952347"
  }
}