{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1892817",
    "entityType": "User",
    "nonce": "0xa629f0c2bff4a291996d15b983db4cf388f1a7b124f2409e9bcfd6bf7cc6ee23",
    "signature": "0x73e886469269cbff879d00c289983a3d3de5dbb6d01ac4a6f2499fea5ebdc3732bd8974a1082230617edd9da5074a88d0aa709efd9c560f338b8bba890e35ed91b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}