{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "315143",
    "entityType": "User",
    "nonce": "0x7209a87c015949141e83f17c1d7cf2bc6e5f51b0c0f9fb9cadcd559651b0d3d1",
    "signature": "0xbcb395f6e9b2cab52f003e0a1137d894b0bb6ff831de23fb712a2d245c86878b303c14ca8341cc49e37da7b42b2b43a20e9b29473a639f566e372ecc79bd50b11b",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}