{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "139859",
    "entityType": "User",
    "nonce": "0xb8c04fb7cb94a2f4336bd3f75e2307f99e3322bb84124e3f841ab3e7d0fcb64b",
    "signature": "0x1a7c0be8c13a4b496746768a4aa6bf382234c2d28f25517c304e727a18196db737472faec45a1b2eff8cd4d1d85490702638be06ba8225619f3830e5951b97dc1c",
    "signer": "0xD7Db519a2A03374B0548c02822bE88402aef1E5b",
    "userId": "715241773"
  }
}