{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "761567",
    "entityType": "User",
    "nonce": "0xc543e2ca719ec1f838dba6a0a254c358a1ad1a8b5e2c7879ff0e004fc3af8d6c",
    "signature": "0xa532ef794eb66e42276cec0e244ede85f7056405bc735e0fd59f8ac0b69d213219685c19179d319c4d1494a8c86a823b2574b3a6e2dfd4abdfbfb8e127ca8ea91c",
    "signer": "0xCedE64dcD8b0FdEDBdADF4b0ba433797eD6301c9",
    "userId": "638733607"
  }
}