{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "387763590",
    "entityType": "User",
    "nonce": "0x40498710b8df7aaf498d1e1a60b237780d15992539a6f43a5872e4abefafb9c5",
    "signature": "0xdbe65590e1313ff1f77edab10ddd8e72ea9ed2c0be3cf429fa7908c50084f9d341f80426b3e1bf7aadc4a54e613d04a804a386706632b27ee588553da8eec0621c",
    "signer": "0xbbB98413eB671bb0000F0b18A2A7Cae9631043E1",
    "userId": "98311147"
  }
}