{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "370554049",
    "entityType": "User",
    "nonce": "0x21431ec6500347b2c7ff39c36f815c7cf6fb2b4725f2752697b93439c4808e08",
    "signature": "0x4ef122bf7fb2dca3c52a93c31e1e7a0479c0b482224f42db4def2a2c4189fe186f9ad5a32ee6f8d94c9e401dc47af7e6c9676b80f6ebe620327cc391160ce10d1b",
    "signer": "0x97Ce19D122F5b51231cF4DBbd25Ac36CBDd6CACa",
    "userId": "426864186"
  }
}