{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "90754",
    "entityType": "User",
    "nonce": "0x2a01ac2c135ce5230bf37a73075f66dc94987c78143d8157af1c60b19f4faadd",
    "signature": "0x601d304d5efe8b6be4cfb06d3d3028ac351c65c5ba9db903f3b5a0cbc3c150d72be988181eabd13be5e87ee2649e0bd23a5dfefd114d6757785250faf0e4c48f1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}