{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "673489974",
    "entityType": "User",
    "nonce": "0x992a76465d90c159a6c14bef8c6c82b388a986ccae11a1f7a73acde7ddce373f",
    "signature": "0xdd0fd6b7b91f74a2689a419ab2da1d4ae461e8af24708f75449b12f5e66bac841b07ef6cd74d9400b54360dcff7ee744d9c7d7b12861d39285192aab1b72f5061c",
    "signer": "0x59765b22C96E88dA578af23E8611d6ca2dcCd7C9",
    "userId": "377610060"
  }
}