{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x643f730ddc603d615918f4a7ac339dfd15b27197613e318658b062be27c33d69",
    "signature": "0x2ea5a31d00e147b04eec685eb26f384b587b3f2bd4d35ab82da3b6a7baaae3f302727ae8ddc6714b0365e3d7a5b504d3135030cfce04d6505c33d5ceeef40ec51b",
    "signer": "0xF3329D37206D9EE99ea06a64E66DcC147c8df649",
    "userId": "272485393"
  }
}