{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "37737",
    "entityType": "User",
    "nonce": "0xd9d04c7b2881f90acf49d05238d9424928068a0d05276cf5252bc663714dcc28",
    "signature": "0x28ee27c280d25e333ab66ad15d8e1ee9fc13cdc2c2b5fe6142e65979424b6592730b3475871a35271734bc831efbfd2579828d2ad520a6d38764abdac097e0b81c",
    "signer": "0x569a23a5D506E4404139fB7510738Ee5b80F5624",
    "userId": "280440301"
  }
}