{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "301637",
    "entityType": "User",
    "nonce": "0x89e0acf993424b4de95d92d4ce85b8be3335fa18c13c2ba851c63ba89603eaf7",
    "signature": "0xf5ab03dcd951421f5005675e0bc562a9c3dd255c82cafae91327fae304fe042758bcf7e2f6c3cccfb885b0ea201b0610b1d33c09b96403a13eba8770cb7772361c",
    "signer": "0x7C2169544c0568cB3b210f320356B6A77E891F30",
    "userId": "495616082"
  }
}