{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb1394d9ffc35169a8b121489cf067f3a28a166beb79cd526891d1ae6cda2a65b",
    "signature": "0xb2fc837dca9f0053a33eefbf84d02660ca4bfe0bed311635d2ae481c17fd3c981cb5e0d5e997af237b39e8500ed41eb17d74953897073cfe41e697590320b5411c",
    "signer": "0xE35DcC5C816D790A9f730B4696F43Caf64d5d1e6",
    "userId": "603916020"
  }
}