{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "100976759",
    "entityType": "User",
    "nonce": "0x2a25dbe6d29af4316e086a2ce2ffebdbf2d6494ac9d52d362d6cfe8ba5a070f8",
    "signature": "0x19fb2d20bc1cb9b7f90ba15b9095106e0d257208324bdf33fb29b22842be30322f2ddeda4173ed20b75dcfb8ddb7243c841313b4d583cdf5b7fa6491136d8deb1b",
    "signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
    "userId": "670307808"
  }
}