{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "943748539",
    "entityType": "User",
    "nonce": "0xa20464c50d5d19e77c27dc1efecc7da06ab5d8ad5c4b5b170b97c2a9df996f47",
    "signature": "0xf5f842034e6ba6c1f44d362177a8dd3b1124320db84722b7b89945f93d0a1d280f9429baa390c887b310648a901f7f7d80b5f06bf020841adf3224f7ee5c5f431c",
    "signer": "0x1011297FAB27Cd869ba8313983bF4793AB784705",
    "userId": "540848139"
  }
}