{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x77658c8104153c4f54690da5f11ed8f74265f88659750abd52e0edc8474f9eb6",
    "signature": "0x4968469bca62d3a2d6c374958b9cd6efd8d76ce2317563838c23942b21b62d01700994af1e6a13f7368bfa8b33ce437ee1fbf2249ae7725a174a3e387cbd0a6b1c",
    "signer": "0x3bD12ab58a07034ab7308b8f86855705f53062E6",
    "userId": "876060179"
  }
}