{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "347439",
    "entityType": "User",
    "nonce": "0x23ef9dc439e4d09aef421b564c1dad53ff7c022e0fdfcf32bbeedd3e76494693",
    "signature": "0xe8410d3f3d4e4b7cdba6ba04c9953334d64a89f36b75ba5273b0f868122f13f02c6be99e66ec8d7af50b03c3c59a79c79e19f9cc3fbc47af95d179fd703c9bf61b",
    "signer": "0x96818aB6687d2E9bA070EB1d6843ef7BfEF5cDa4",
    "userId": "806873848"
  }
}