{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb8891d08803f04c60c2caf36438457c419c65c07f1c4ad1cde49bb3ca199f4ee",
    "signature": "0xfdc169b43bece27942d3aef1497677127ec189073ffdff79a847e6569b6feb0c6a08220a3de29060466d148237e89f5f150b14931836ff8d67b2e123d64a0a431b",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}