{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "304091",
    "entityType": "User",
    "nonce": "0x8ff4bacde57d19f8b55a4f71637b8b5b901232ff65e51f529ea6666e8c9d2df3",
    "signature": "0x85fd5c52771ee0f73ad9ed5cc45aa2a47728fc0c1e45f1dfb9f4787918b9b1c56ba3e3dc3ae9605a8e5dcdbf1b65f42561749fa153d233fde76cca1ae84732581b",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}