{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "156223449",
    "entityType": "User",
    "nonce": "0x070e9a51b7b25298e696cc1763059a1338044421e6067574af38bbe9d98a9818",
    "signature": "0xbaef1fe5ed041dad74173a81cb31a2f645c000b9aaea118a9a36bdfe3518c1680baef7999b16c48abf827e44c9d942b494a28cd352528c953ae9b7af60399eb91b",
    "signer": "0x21C9b5409a415E4F0923C5378a82C85B8dd3467f",
    "userId": "575912766"
  }
}