{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x15668eeb5d017c57d8db5c656f6452c161e7d0ef4ed95cf39eea0ce3f940f3d7",
    "signature": "0xeaaad1bf7191852ce4efae065d10deab2c42548f671684dc57a18a4b7cec4d4668ff490dae6c9491c14b372d852bcdbcea1e863d2d117480d3c37f38607ac8941b",
    "signer": "0xc5feD1872BC05Ec03aF299E6A4B8B81D9d531925",
    "userId": "599834673"
  }
}