{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "775959",
    "entityType": "User",
    "nonce": "0x6372588eb6b5bf9d629c5077ff5b571dc999247305b1013acf1ffe3cd72ec151",
    "signature": "0x646077597421eeec63d7595d52b059090924266e1550f33988597b9eb08cd3515b52272ecaa0b7df1da2a1ac56103379021b873af59a0565970323f695c77c171b",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}