{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "728570067",
    "entityType": "User",
    "nonce": "0x801fea4bb1f491148b1b695db2cfdbe7c045acc6491649a27ccd1aa9fee8618d",
    "signature": "0x19fc70eb52bdbb3e213abd12bcd8cccee8da8071a6b5033e360249123ac981d8768a8f5188b55c7d0a6913dabbf44cf0b523ecce3b84696d254d47267fc03e1e1b",
    "signer": "0x195d9eE11400245E841C02c4b4288a90A8195e91",
    "userId": "103785872"
  }
}