{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "103874",
    "entityType": "User",
    "nonce": "0x141a20f680bf68929cff9d2631e819cb1db6d010f555b709c9fde9ac2665c99c",
    "signature": "0x59408a0b57e387ef47b90aa2620b3de24bc21d559727d8df5b4fa501a045254639a497c8252b8473ddebb7165fbc4ff7d9daf6fd50f4370ade89c3ad79f619481c",
    "signer": "0xC965eCf215DC75172bD11e8E1dbE76EDd838886e",
    "userId": "260849"
  }
}