{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "163449",
    "entityType": "User",
    "nonce": "0x50cab59b7ccb178a31f829a03e4757bf99c4c4eb539e497530e21119bd243664",
    "signature": "0xdce7b741255c2814fa1694e3c52ddfac110b84c4f4dfa3f412e2eded159bf3fe0b141d1adcc1328b10801c5fc9e66c58c71c7876e530332034c078023bd48bfb1c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}