{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "215307",
    "entityType": "User",
    "nonce": "0x40cf5ebe571c8b38be8537badb4eada6a40db2faf9dc3f007f5cceb0dec406ec",
    "signature": "0x74d1180e8fc01459d2a841dc130b279b7f7a0b9005ff70e94f72c469fcfe91d1743a67ef480a7d9de14c1e7eaf1f06db67773c7aa15461b17e42664a06a58efb1c",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}