{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12935",
    "entityType": "User",
    "nonce": "0x27509202010d0b94760df2a0ba1b57f12149d6756697b015cddea6fe81e17fde",
    "signature": "0xdf03ab5aeebae184e3b8c7499a601f0d1324ca8dab8328e3f2b94609dcf32c2c659e72e4731b79e17f125361fea89496c8c2cbd1cfedd4dcd03cb523ae1d452e1c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}