{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x944b1b0b5f5efa22b9ec73167ffebe5108a2494fb74134e5a594600bee01d2e3",
    "signature": "0x0412db12dd2efe985a1ed61c841b71ef174f819e580e6d056ab4ca6873baeab22c4e7808a6fc5d4acd5d3d8e4c478f8e50d2e070cca542a1b1bc22a5304e92901b",
    "signer": "0xCea1855A880e9478407CC9843e16081D4a9f0671",
    "userId": "916818941"
  }
}