{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "446645802",
    "entityType": "User",
    "nonce": "0x9097cd4e5904466ebe3df4b1970e7bcb5246052efeb24e0af25230d6f1fe51a4",
    "signature": "0x41cb6ea535ff7ac26db4c5f65e00acc7bc598d66b6e89e8bb79630351cbbc86015d533c2039ed998b9b9ae47be98f8d506f0d32ddc7a1678a107c356ba1f043f1c",
    "signer": "0x4Aa8154A33F33394BA8De574d71aC98Ba6A47D5a",
    "userId": "645720561"
  }
}