{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "451691735",
    "entityType": "User",
    "nonce": "0xeab8112cb349b066434f49ef8b833671f20386e049e316322cbf185e01aa1ded",
    "signature": "0xfdc13f28a86afd5db19a8c1eaf647750f2d46bc0e236ded71bac0f99186eed1d48b311eb63475dc4b1a6886ce1ac8ae836a6d1af591240fd0f6e4151ad7b35351c",
    "signer": "0xb2B3D446C5A606ee5B3e74e77EE3c96634De4a27",
    "userId": "399675354"
  }
}