{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "620307004",
    "entityType": "User",
    "nonce": "0x77c4293c8bda9f4fa7f3f2e21b31b5a9141813f82caf577cfb8ee260ff0b6e27",
    "signature": "0x3016223db618499886284ab8304af5d02ea37f7f1faa858988da65a85f418d250d810bde4fb217630f5681dd92e7c6e22e46e904754f7bbb0df3d6f4bf5217ed1c",
    "signer": "0xfD0827feeA935870Ac23f5F692AfFc1037D299a7",
    "userId": "176456010"
  }
}