{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "768428",
    "entityType": "User",
    "nonce": "0x899343febc0edbe380a0cad86c1de7c6896eed234b17985e84af079b58436bd2",
    "signature": "0x64a5572a3db89676f1ddb34b3948c52126ad106ba08be5b500dcf4e6336978c86fc5743f8f0c424eab79f7ce2075991000c682eafff6a84ccc0532cee79d70f11b",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}