{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "313481598",
    "entityType": "User",
    "nonce": "0x0f73cf29e2ef333279c5679dcaa8a98d66942484a605ee02e3e3fe91b56d2dca",
    "signature": "0x280a4d2bc550610a7db3442fa8d13e37f940def695c595bf1c3e4b0969f6d27f213e57c99ec3d40157c95ed6f170d0436a0a768e02cf14f64f6abfa2dd7cb02c1c",
    "signer": "0xD9254B079e0e1571E56512C57188F2eec899054f",
    "userId": "854498636"
  }
}