{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "528523967",
    "entityType": "User",
    "nonce": "0x15410bc42cb53e23a183019d11c1b59d29c41a355048411c35630359cb8922f1",
    "signature": "0x5073fb3d17d50396c600b1ba78910b4ce6918b7303e08caf1b6b1aa3675c31c258a846fbb5d1656f364c1802a52ae8095988eace4d5bbd0650f837731c6d82a81b",
    "signer": "0x98fC2b30E6e70e62dB2b5fAE7b0292DE3D4323Bf",
    "userId": "480962013"
  }
}