{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "512317",
    "entityType": "User",
    "nonce": "0x3a6c16859a7b359d20329c98872ec0d5e89d44b2b9f33e2a3fee31ed1457fd19",
    "signature": "0xaa3216e8d5fdfba7524df039573a8d0d969196750d4d700633e4ebcb275a4f59556aaebb7dcd99ec34dbf46116b5317096882d92a459c0303565fba837878ea41b",
    "signer": "0x646BEca96ab04bFb6DD725EEBc0383e1Ef13deeE",
    "userId": "588448440"
  }
}