{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "17772",
    "entityType": "User",
    "nonce": "0x28f7d85d3018ef6ad0b395e6f757c4e2530a3f2734f7a4466339bbc3c42c1b0e",
    "signature": "0xf1eb3acc1829fcb11bb16bd31204b39558cef7712501c2e3c2ec2d2a4f94cd1a2bb57c24a6a44017fb57188e33aaac0b46455ffbc00f333b0c0fcc51f540ef581c",
    "signer": "0xF5C198A035503518a579b15Fb9eE834F3b4b1bAB",
    "userId": "765691673"
  }
}