{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4da220f43ad024924e6892eb072610c7cc7e2d9be45897caff69f8319c0dd335",
    "signature": "0x0681a9bb47013c6cb51fcc7e9449524482df0ee73d3eeec12e9ab2489f05ab554a5f0f96d99caadff352501802c21d8c51c50691213c700f371c425f1bc2ee9b1b",
    "signer": "0xf03E2eb658f4057Ea4255CF34BcE6009938B86f6",
    "userId": "904522318"
  }
}