{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3fe942b2c39dc54a2b78aa55accaca47a9b7770717e9ae96414bcb647de2e033",
    "signature": "0x98f0ffb7cfca272df9470d0327553843bbc0316cd5ed3d2b94645bb66c4a1ac17db00ef1834f59848db89955c80cda4f040a9d9d30703099051e06999858f7a61b",
    "signer": "0x711593aBFB1733F1c6Fd17CAd453D026c8b27348",
    "userId": "319590005"
  }
}