{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6edc7c05d6febb74352622088901f99237f10c97bcd1aa6ab8aee1f5c362293a",
    "signature": "0x1f9a9def98c5235f4c82b37f891f0ea6368f6f258418faacd3855ac168b729862e65b3b481d60ad8b445b1c789fd42809e332257daf71f8c67512ffb80eb34461b",
    "signer": "0x87FC3581f96D45b347BB39E15f25079950C5Cc27",
    "userId": "339826419"
  }
}