{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "108192",
    "entityType": "User",
    "nonce": "0x16d41a581a05e3ffa646dd637c9c12a8c93c8242785ce094697884f35571eb52",
    "signature": "0xa6a4805f95d5f4a0da34494bace35a42d436373cb3655d8c6351717ff26d175317f52653314a7c9ab8676f2f2ae55301b29cda52bb5c3dd558699b3a939524d81b",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}