{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0xd384b2c587eecfc0bd8083e5ae898b1d09915fcb4d9b29289dbe9b8cdd4f5b11",
    "signature": "0x466d7eb0807b65809fa3a15b0aee6942e4144c4c9e012493e173eac1d05136c6716cbeeb8ec7760b400f890bd09fed9c44761ecffd60a01e030aca4e1fa227051b",
    "signer": "0xe23f94433EED8958AAF9868141BA976B8fffb969",
    "userId": "307915745"
  }
}