{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x83bf74c31f0ea494b6f81b63d6a1cb41755ad7f4e1f08f9b1ac7fcbd06b5d979",
    "signature": "0x23e1cba4b8910de1a1b18a3f65a177d658e3ed2974ff90a3de2b9d91ed2d8ffa39e95c994b5a844839afe47569a55f53ac56c47b4cc1b63d74464395409837281b",
    "signer": "0x96F25BA81df0482778A947af84C03800CF5f5d64",
    "userId": "993166642"
  }
}