{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x32ef19b0abc1824b90c88d74a386572598f3f45c09085f599466a37eeb90954e",
    "signature": "0x156edff9361b74f4442947096af7bb121481db8a7ea2d0d4a3b3ab701cf6d38d0f5630b2366eb7e6ade580e89b52ba2571d624db41b39f4caa42ce66838879cc1b",
    "signer": "0x4D4b044975729f8B03ae75F9BE9be704fFF87751",
    "userId": "740062254"
  }
}