{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "987235245",
    "entityType": "User",
    "nonce": "0x6f4b932b0fccd07d707e9c8cad4cae9be36abecf23cb4e6fab03f1ef31a51e61",
    "signature": "0xdaea680c6d128498c1df4831b91cc8c9ebfd3a449bb43b2864d2b755e3a7dfa471c7b30acae554e5c9732cb37b7a0fb9098da2e54c7246b2a59126a52ef83e101b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}