{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x40e76fcd27344de13600276e53329cf19ab18f26a59dcc7cf8fd47be983b8667",
    "signature": "0x516061fa0ef5a11624a8e2661a744f14c6320fbeb5cefac3b45645348261e15152bdf46d0267d19e1955327a2cd9217395fb493ebcb66cbeeec208bd713293fd1c",
    "signer": "0x7769612bD3592a5B64e547CEa4ADfBC3817e6466",
    "userId": "470930105"
  }
}