{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3407",
    "entityType": "User",
    "nonce": "0xabfbe76d930fa18767d17effd7859630947c8ad5fd45b1bce0a58c026fa92058",
    "signature": "0xc8c76992a669df8866e8ccbc7c48d7064c54ff365cb303bbf9a9cf8ab6f275de0b0bc3d9f8ccc248f69d5dab5c9601afdbc573af71d8012189e7f7323dc090831b",
    "signer": "0xD05c50E9379973376d0cA28B2404f66DF52d3570",
    "userId": "534408612"
  }
}