{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "13816",
    "entityType": "User",
    "nonce": "0x28edc7477cdafd9e5e3ed9e851604b30569ac2a882b87e2cfc28ec4ee2d527db",
    "signature": "0xd3ba8d076ce10d4b3e6ca4a2998727244753c4b4add65b810fa2c44097d0b3166eca838fe38f1389f5ca8e56d8ab30c9a92729035d7ce68e16159db35f8392051b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}