{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd28fa39c83ad1da01e2bc40e634b813b22d86b22678a1be3e03f86d9181631c3",
    "signature": "0x9313685966c104764759452e8fcb2729d528821b9ed8aad4204b7965d52c7ac271fda1574d0979598a8f17a27ac9fe361f0ff499bc32801ac29aa670843b1e8b1c",
    "signer": "0xe0427b2da5a7998032CDfFBf0E481807BFBd4Fb1",
    "userId": "574969152"
  }
}