{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xdc7237ba6828d400e985e1fc411503feada99df3b8d0323d2df050fabd77824d",
    "signature": "0x5f40f7ac631b8a9039fe6ccd7c322949dfd3b3ed837eb4ca2ea4644fc955636779f0f664e251777f25bccb1ca211853eca3d429e5b510ab238280653a32964401b",
    "signer": "0x5E525e13F169B08B94891FdbC996D3fF2740E9E9",
    "userId": "547631414"
  }
}