{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "556395518",
    "entityType": "User",
    "nonce": "0xb8cf76daf0f9d4936a89a22187dfeddefebcc9b56500ca707827e3aee252f734",
    "signature": "0x7973f1c9e9c0391d5cd8e3f35fddddb3deeb8c4e7e928175f4e40a71ea88021800044209c4d822ae403227f1f0b1059ef9906dcf82ce4643fd873866ac1bc8c51b",
    "signer": "0x9BaE2e1849D39772019b4AC3468e938a232f73ee",
    "userId": "948584098"
  }
}