{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "198205",
    "entityType": "User",
    "nonce": "0xc12e513d5452416d4b3ac9b8d310e6146e47a25ca0c5c7b64175927c1146880d",
    "signature": "0xdd4018b1f77830bac0c1aa1126cef4a6eed80e68d51c958f6dff54afa05fc00911b52493eb6cfec9dd46c1ea90e40536c713c9c8633a30fd92f8f4bb854214b91b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}