{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "777385",
    "entityType": "User",
    "nonce": "0x8dc55481b9b2977154bb2c45c6007d837a7105f01acda8366715d67e8fb3c524",
    "signature": "0x82934191f8f013ff8dbd89be6611533b1a81be7063ef3028e0c00001d85d669c2094b65e279001e78f09e2eda40ee49a7629bc773d31bc140f33958e7afdb48d1b",
    "signer": "0xaa3bcf8712A3f5a178c83edE5e3DA745C257458e",
    "userId": "976266161"
  }
}