{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "29723",
    "entityType": "User",
    "nonce": "0x57da3d8c997d98efd2221b37fbfcf9f2fa1605076cc168e07baa3034977be88c",
    "signature": "0x25e93ddefe3b5cbf0458e5c46770812910a2365e309b09db75474202b9b218cc0709bfa7822639e85acfa695297fdc2660bf3422f103727a76baf50417b71a6f1c",
    "signer": "0x39788E2D020D54760872178Cea0d5AF12732F02D",
    "userId": "720903941"
  }
}