{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6198df03561b06fed332f00ac724a7a5e1add436486d0ba1e3e68f041cd35429",
    "signature": "0x4fcaa70f5b096a8e10e391f3691c70cfa27009eaae428636c0f6a368ea31df1235728347ce47456c2d3b0a35937e4135bdba735079cf18173aad95c4309849d41b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}