{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "557210595",
    "entityType": "User",
    "nonce": "0x14907ab49cba69b5a9c239affd109f8ab5ec612b379d27866becf2ac3675f187",
    "signature": "0x5f78aa33a6c5abce33bc79994388861161119357a373f3889ddb5aeef6a81a024fe8f9d93ec36cdd4e8110a5bab59f669c82153bc23e9278ad3a0dd70d36a12e1b",
    "signer": "0x136A4e19270387bc21d7e58a9592D46864B0Ad57",
    "userId": "956002390"
  }
}