{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x29108b71640e0c838bbc7b29335d6591bc5c388eeb69f54b6b5b2d0790395bab",
    "signature": "0xaf58342727496f32b5d452268a0e37ab87b78c212c1209832c2ec439c17b245d3c3cddcad7daf0b712282a709c47962d4dd2e72d0bcb87cb7fbc1722f5681c7b1b",
    "signer": "0x54bed9FCc45710BaB526AaA37Be6d7E22e31d2e8",
    "userId": "555228176"
  }
}