{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "923551697",
    "entityType": "User",
    "nonce": "0x5f3945f575d40822238a95521716d7b99c1200fd71c488a0c5643f420f9719a0",
    "signature": "0x7bc8fc39fa0bce4e4f6fe9856b7f4ed08573e72fb622fde88d578ec9fc1ecb6e5ef0bb0596213da6b0475dba2303747ada8bb505f1d17ce8bc1394a6c158f8601c",
    "signer": "0x03015d975f8B0d07425826BFAc15A4492F59a5B7",
    "userId": "658736296"
  }
}