{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1435601",
    "entityType": "User",
    "nonce": "0xc151e507a205dbbb96a74e24a524f3d4ab42ad1f02dd5769730a747f60738cea",
    "signature": "0xc0d9005abc8b98f89eb7aea8f81bd57d96b9bdd093345e78275e738b2ee675241bb8f3c06453ef538bc59ad7badb242e9adeec16d6a5e92112d97fe24f5311521b",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}