{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x10b8d70917c64f28e15a61b0f21f91032c587617b3616e36808f52c43b7cfe0d",
    "signature": "0x35dfdab6fdb3202fd1138c9c7c314a1fde83fb83aa02452bdb9e52e284c7905b5ded3557aa4b6effd32c20cf68a6352b14dd79a776bf4dfb01406e1cbfe23e2a1b",
    "signer": "0x9de29362DF595E6949CaA2820c5c28c3D6b0CEe1",
    "userId": "857551474"
  }
}