{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "208551",
    "entityType": "User",
    "nonce": "0x1bbe819e376f5f673d479d1ec2481da757a87b8dbf3141feb7c1d1735a404497",
    "signature": "0xa80cb251d7e0fb4e72bcf4bca6901d4f7bc4525a9faf445076bdd67e0eb670ba33732bd977e17e140a72a34764945408b8dde1e8c7cb7b3a606c6d89b2aa00511c",
    "signer": "0xb7C7a8D9d12EBd1Cd438cB065E97280E6D7e912A",
    "userId": "984691913"
  }
}