{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc8bd5222a053cb1a78a266353df7b43030957e46313ce32afdeb0af532a4a4ca",
    "signature": "0xfdd1ad9c5ae7b0d07bf8334077745f87564082ae494f4008eba24a6960455f3d1cfe681d0839ac16ae3e538af71dfdf605d80ba4b3ed7fd6d8ef4a4aae3d3b371c",
    "signer": "0x40A99944a8D033a9b473a5c3570Ef87f694f2C4e",
    "userId": "208861017"
  }
}