{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x737ca1d0c0ab39cf7b8f7a517673ca3b0c818a21424edba6789ada114f802f4a",
    "signature": "0x1f7cff138b8c0421e6e77dc862a44e10eace27a363dcbefaa5e72f45900ff3787f3e5822c9cdba4abbc270131fa2933bf347e628bae6d086aaf1929ee260703f1c",
    "signer": "0xC4F1D4AD65Aec4aa16A50FcbF32a9c685a22cf01",
    "userId": "551975061"
  }
}