{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x08d926c4a37b4a706b12f5c85b82801c4969c434c9f6aaac1b0a11466efc5409",
    "signature": "0x4d2347b97bdd179f8476428d5e3769d8fe24171718d5548e104d4193cf97731a219aaaeeeeb18c6cbd217471d94c3bb08e51d37d5caffaecb40789fa622349361b",
    "signer": "0xeB8594C91d906C7215f8004BE2DC56e9F34615D6",
    "userId": "957456001"
  }
}