{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "304921883",
    "entityType": "User",
    "nonce": "0x203fcde2d07d5b96f984d5598467b1e8ebc6ac1b2a4bb41561c64ff506ac70ec",
    "signature": "0xd3921d4e9591889406e1fb852e72dc9a2e9bccc79cb74c8fe72af49e954ab69809e2b66cfad82696dbd71dc64d1b4762ca3467fd97ff4b9a723459f45e8396db1b",
    "signer": "0x34Cea527C1dc0575a5B686515aad0Bf8F3b5f97E",
    "userId": "13589021"
  }
}