{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa3abbe80c4c09374b9e3850403c1f37001a4a03f4b619daf3106e142a3b1bba0",
    "signature": "0xb87810c97120d987db4b1bc2052dbb2cb27c7edbc6d0a291c0be534d2b6fdb081f7bf266a97ec8e0bf56d60fcf5c6ee354d20784d17364f43a117935380130a01c",
    "signer": "0x2956bF79d75b2915Ca9c90f4E8A2937eF502b366",
    "userId": "303397856"
  }
}