{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0x5534e345a87d90ef76bcd6f7d44a819436896f2a615912a23132162c2541e601",
    "signature": "0x584e0979eb58c0b6c9f0e064129dd1de957a1a49e49d8495b89d6922741b98735bf3d833225c761c2a9d958fcd4ab75f32a2e09712e4a6a38612b281f08ecfbd1c",
    "signer": "0x00cf0168F42053036842AaB1eF749F0183ccEa03",
    "userId": "183427799"
  }
}