{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "667809204",
    "entityType": "User",
    "nonce": "0xe7b7d7bce52133b227c99105381a27fbd639dab48d07a505c0684a6fbcc68e31",
    "signature": "0x10bf390092634b1ca721101d4ec4010c746eb665f7f2832924f0e3959b9b5ba8772233efc4bf780ccf62258fc2556d7edacec6310af90f71a8101cbf7cf4f4831c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}