{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc303007646335975c01304ea33d73ff22ffddc3bfdb165d48ef40c5c148ec727",
    "signature": "0xee87745cdf85459a6a928c1aced5b4af751c8898fc1c0af4cf3f089253435c9e6c56ee718dc507312ab24152eef2cf46a713ad9eade975893e1d75018767b9f71c",
    "signer": "0x3461908fDAcb8a77916f938c6c7450798046b4bA",
    "userId": "899519127"
  }
}